20131002

Words ending in -OUS (a-m)

Words ending with the suffix -OUS Letters A-M

This list is expanded and updated regularly.
With very few exceptions, all words on this list are adjectives. Those that are also nouns are so noted.


abdominous also potbellied
abiogenous
ablatitious
abnormous also abnormal
absentaneous (Obsolete)
absonous (Obsolete)
abstemious
abstentious
abstractitious (Obsolete)
acalysinous also acalysine
acanaceous
acanthaceous
acanthocarpous
acanthocephalous
acanthophorous
acanthopodious
acanthopterous
acanthopterygious
acanthous also spinous
acarpellous (British English) or acarpelous (American English)
acarpous
acaulous also acaulose, acauline, acaulescent
acclivitous also acclivous
acephalous
aceraceous
acerous 1. (Zoology) 2. also acerose(Botany)
acesodynous
acetabuliferous
acetarious
acetous also acetose
achilous
achlamydeous
acholous also acholic
achromatous
achromous also achromic
achroous
achylous
achymous
acidiferous
acidophilous also acidophilic also oxyphilic
acidulous also acidulent, acidic
acinaceous
acinarious
acinous also acinose
acoelomatous also acoelomous, acoelomate
acoelous
acondylous
acotyledonous
acrimonious
acritarchous
acrocarpous
acrocephalous
acrogenous also acrogenic
acrogynous
acronyctous also acronycal
acronymous also acronymic
acrosporous
acrotomous
actinodromous also actinodrome
actinomorphous also actinomorphic
actinomycetous
actinophorous
aculeous (Obsolete) also aculeate, aculeated
acuminous
adactylous
addititious (Rare) also additive (in adjectival form)
adenocarcinomatous
adenogenous
adenomatous
adenophorous
adenophyllous
adenous same as adenose
adiaphorous
adiathermanous
adipoceratous same as adipocerous
adipocerous
adipogenous
adipous (Rare) also adipose
adipsous
adjectitious also added, additional
adoptious (Obsolete) also adopted
adscititious also ascititious
adulterous
aduncous
advantageous
adventitious
adventurous
adversarious (Rare) also hostile
adversifolious
aeneous or aƫneous
aerenchymatous
aeriferous
aeruginous (British English) or eruginous (American English)
aestuous
aetheogamous also cryptogamous
aethereous (British English) or ethereous (American English)
affabrous (Rare)
affectuous (Obsolete)
agalactous
agamous also agamic
agaricaceous
agatiferous
agnathous also agnathan, agnathic
agynous
alacrious
alacritous
albugineous
albuminiferous
albuminiparous
albuminous also albuminose
alburnous
algous
aliferous (Rare) also aligerous (Rare)
alimonious (Rare)
alismaceous
alkalious (Obsolete) same as alkaline
allantoidoangiopagous
alliaceous
allochroous
allochthonous
allogamous
allogeneous (Rare)
allomerous also allomeric
allomorphous
allonymous
allotropous
alluvious (Rare) same as alluvial
altisonous also altisonant
altitudinous
aluminiferous
aluminous
alutaceous
amarantaceous
amaranthaceous
amaryllidaceous
amaryllideous
amatorious (Obsolete) same as amatory
ambaginous (Rare) same as ambagious
ambagious
amberous also ambery, amberlike
ambidextrous also written ambidexterous
ambigenous
ambiguous
ambilevous
ambimoustrous (Informal)
ambiparous
ambisextrous
ambisinistrous also ambisinister
ambitious

amebous (American English) or amoebous (British English) also amebic (Am Eng) or amoebic (Br Eng)

amentaceous
amentiferous
ametabolous also ametabolic
ammonitiferous
ammophilous
amnigenous (Obsolete)

amoebous (British English) or amebous (American English) also amoebic (Br Eng) or amebic (American English)

amorous
amorphous
amphibious
amphibolous also amphibological
amphicarpous also amphicarpic
amphicelous (American English) or amphicoelous (British English)
amphigamous
amphigenous
amphigonous
amphipodous
amphisbaenous also amphisbaenoid, amphisbaenian, amphisbaenic
amphistomous
amphitrichous also amphitrichate
amphitropous
amphogenous also amphogenic
amphophilous also amphophilic
ampullaceous also ampullar, ampullary, ampullaceal
amurcous (Rare)
amyelous also amyelic
amygdalaceous
amygdaliferous
amylaceous
amyous
anacanthous
anacardiaceous

anachronous also anachronistic, anachronistical, anachronic, anachronical

anacrogynous
anadromous
analogous
anamorphous
anandrous
anantherous
ananthous
anarthropodous
anarthrous
anasarcous
anatiferous
anatropous
ancipitous also ancipital
androcephalous
androdioecious
androgenous (not to be confused with androgynous)
androgynous
andromonoecious
andropetalous
androphagous same as anthropophagous
androtomous
anemophilous
anencephalous also anencephalic
anenterous
anestrous (American English) or anoestrous (British English)
anfractuous
anginous also anginose, anginal
angiocarpous also angiocarpic
angiomatous
angiomonospermous
angiospermatous same as angiospermous
angiospermous
angiosporous
angiostomatous same as angiostomous
angiostomous
anguineous also snakelike
angulous also angulose, angular
angustifolious also angustifoliate
anhelous also anhelose (Rare)
anhistous
anhydrous
animalculous also animalcular, animalculine

animous (Obsolete) (not to be confused with animus) also animose (Obsolete)

anisodactylous also anisodactyl
anisogamous also anisogamic
anisognathous
anisomerous
anisopetalous
anisophyllous
anisostemonous
anisotropous also anisotropic
annelidous
annonaceous or anonaceous
annotinous
annoyous (Obsolete) same as annoying
anodynous also anodyne (in adjectival form)
anoestrous (British English) or anestrous (American English)
anomaloflorous
anomalous
anomophyllous
anonaceous or annonaceous
anonymous
anorectous also anorectic (in adjectival form)
anourous or anurous
anserous also anserine
antecedaneous also antecedent (in adjectival form)
antenniferous
antheriferous
antherogenous
anthocarpous
anthophagous also anthophilous
anthophilous
anthophorous
anthraciferous
anthracitous also anthracitic
anthropomorphous also anthropomorphic
anthropophagous also androphagous
antibilious
anticensorious
anticeremonious
anticontagious
anticous
antidromous
antigenous
antilogous
antimonious also antimonous
antipathous (Obsolete) also antipathetic, adverse
antipetalous
antireligious
antisensuous
antisepalous
antistrumous
antitropous also antitropal
antituberculous
antitypous (Obsolete)
antivariolous
antonymous also antonymic
anurous or anourous
anxious
apellous
apetalous
aphanipterous
aphidious
aphidivorous also aphidophagous
aphonous also voiceless
aphthous
aphyllous
apiaceous
apivorous
apocarpous
apocynaceous also apocyneous
apodous also apodal
apogamous also apogamic
aposporous also aposporic
apostematous
apotropous
aproctous
apterous
apyrous
aqueous
aquiferous
aquifoliaceous
aquiparous
araceous
araliaceous
araneous also araneose also arachnoid (in adjectival form)
arbitrarious (Obsolete) also arbitrary, despotic
arboraceous
arboreous
arborous
archaeostomatous
archichlamydeous
arduous
ardurous
areligious
arenaceous
arenarious
arenicolous
arenous also arenulous, arenose
argentiferous
argentous
argillaceous also argillous
argilliferous
argillous same as argillaceous
argumentatious
armiferous (Rare) also armed
armigerous
armisonous (Obsolete) also armisonant (Obsolete)
aroideous
aromatous (Obsolete) same as aromatic
arrenotokous or arrhenotokous
arreptitious (Obsolete)
arrhizous also arrhizal
arrhythmous
arseniferous
arsenious same as arsenous
arsenous (not to be confused with arsonous)
arsonous
arteriovenous
arthrodirous also arthrodiran
arthropodous also arthropodal, arthropodan
arthrosporous also arthrosporic
artificious (Obsolete) same as artificial
artiodactylous
artocarpeous also artocarpous
arundiferous
arundinaceous
arundineous
asbestous (not to be confused with asbestos or asbestus) also asbestine
ascigerous
ascititious also adscititious
asclepiadaceous
ascocarpous
ascogenous
ascomycetous
ascosporous also ascosporic
ascriptitious
asepalous
asomatous
asparaginous
asperifolious also asperifoliate
aspermatous also aspermous
asperous also asperate
assassinous also murderous
assentaneous
assiduous
asteraceous
astichous
astomatous also astomous
astriferous (Rare)
astrologous also astrologic, astrological
astucious (Rare) also astute
asymmetrous (Obsolete) same as asymmetrical
asynchronous
athalamous
atheous
athermanous also athermous
athermous also athermanous
atheromatous
atokous
atrabilarious (Archaic) same as atrabilious
atrabilious also atrabiliar
atramentaceous also atramental
atramentarious
atramentous
atrichous also hairless
atroceruleous
atrocious
atropous also orthotropous
atrous
attiguous (Obsolete) also contiguous
audacious
augurous (Obsolete) also foreboding
auntrous (Obsolete) same as adventurous
aurantiaceous
aurichalceous also brass-colored
auriferous
aurivorous (Rare)
aurocephalous
aurous
auspicious

autecious (American English) or autoecious (British English) also homoecious

autocarpous also autocarpian, autocarpic
autocephalous also autocephalic
autochthonous also autochthonal, autochthonic

autoecious (British English) or autecious (American English) also homoecious

autogamous also autogamic
autogenous
autoicous
autologous
automatous
autonomous
autophagous
autophanous
autotomous also autotomic
avaricious
avarous (Obsolete) same as avaricious
avenaceous
avenious
avidious also avid
azotous (Rare) also nitrous
azureous also azure (in adjectival form)
azygous
azymous also unleavened, unfermented
bacciferous
baccivorous
bacteriophagous also bacteriphagic
badious
balaniferous
balsamiferous
balsaminaceous
balsamous
barbarious same as barbarous
barbarous
barbigerous
bardolatrous (Facetious)
barretrous or barratrous
barratrous or barretrous
basidiomycetous
basidiosporous

basophilous also basophilic also basophil and basophile (in adjectival form)

basylous
batrachophagous
battailous (Archaic)
beauteous
bellicous (Obsolete) same as bellicose
benevolous (Obsolete) same as benevolent
berberidaceous
biangulous (Rare) same as biangular
biantheriferous
bibacious
bibliolatrous
bibulous
bicallous also bicallose
bicephalous
bicipitous also bicipital

bicornuous also written bicornous also bicornate, bicornuate also bicorn (in adjectival form)

bifarious
biferous
biflorous also biflorate
biforous also biforate
bifurcous (Rare) same as bifurcate (in adjectival form)
bigamous
bignoniaceous
bijugous also bijugate
biliferous
bilinguous (Obsolete)
bilious
bimanous also bimanal
binominous (Obsolete) same as binominal
binotonous
binous same as binate
biogenous also biogenetic, biogenetical
biohazardous
biparous
bipetalous also dipetalous
biramous also biramose
bisetous also bisetose
bisexous (Obsolete) same as bisexual (in adjectival form)
bisexuous same as bisexual (in adjectival form)
bismuthiferous
bismuthous
bisulcous also bisulcate
bituminiferous
bituminous
bivalvous also bivalvular
bivious
blandiloquious also blandiloquous
blasphemous
blastocarpous
blendous
blennogenous
blusterous also blustrous, blustery
bodacious
boisterous
boistous (Obsolete) also boisterous
bombacaceous
bombycinous
bombylious (Obsolete)
bonhomous
boracous
boraginaceous or borraginaceous
boragineous same as boraginaceous
bounteous
brachycephalous also brachycephalic
brachydactylous also brachydactylic
brachylogous
brachypterous
brachytypous
brachyurous
branchiferous also branchiate
branchiostegous
brassicaceous
bromeliaceous
bronchocavernous
brumous
bulbaceous same as bulbous
bulbiferous
bulbous
bullous
bumptious
burdenous (Obsolete) same as burdensome
burglarious
burseraceous
butyraceous also butyrous
butyrous same as butyraceous
buxeous
byssaceous also byssoid
byssiferous
cacophonous also sometimes written cacophonious
cactaceous
cacuminous
cadaverous
caducous
caesalpiniaceous also caesalpinoid
caesious (British English) or cesious (American English)
calamiferous
calamitous
calcareous
calcariferous
calcicolous
calciferous
calcifugous
calcigenous
calcigerous
calciphilous also calciphilic
calciphobous also calciphobic
calcivorous
calculous (not to be confused with calculus)
caliginous (Archaic)
callipygous also callipygian
callous (not to be confused with callus)
calorie-conscious (Informal)
calumnious also calumniatory
calyciflorous also sometimes written callyciflorous also calycifloral
calycoideous also calycoid
camous (Obsolete)
campanulaceous
camphoraceous
campylospermous
campylotropous
cancellous also cancellate, cancellated
cancerous
cankerous
canorous also melodious
cantankerous
capacious
capillaceous
capparidaceous
capricious
caprifoliaceous
caprigenous
captious
carbonaceous
carboniferous
Carboniferous also a noun
carbonous also carbonaceous
carcinomatous
carduaceous
caricous
carious
carnaptious (Scottish English) also cantankerous
carneous
carniferous
carnivorous
carnous also carnose
carpophagous
carposporous also carposporic
cartilagineous same as cartilaginous
cartilaginous
carunculous also caruncular
caryophyllaceous also caryophyllous
caseous
cassideous
catadromous or katadromous
catanadromous (Rare)
catapetalous
cataractous also cataractal
catarrhous also catarrhal
caulicolous
cauliflorous
cauligenous
caulocarpous
cautelous (Obsolete)
cautious
cavernicolous
cavernous
cavernulous
cavillous (British English) or cavilous (American English)
cedrelaceous
ceduous (Obsolete)
celebrious (Obsolete) also famous
cellarous
celliferous
celluliferous
cellulous
cementitious
censorious
centicipitous
centifidous
centifolious
cepaceous
cepevorous (Rare)
cephalopodous also cephalopodic
cephalous
ceraceous
cerasinous
cerebellous
cerebrotendinous
ceremonious
cereous (Obsolete) also waxlike
ceriferous
cernuous
cerous
ceruleous (Obsolete) same as cerulean (in adjectival form)
ceruminous
cesious (American English) or caesious (British English)
cespititious (Rare) same as cespitous
cespitous
cespitous also cespitose
cetaceous
chaetiferous

chaetognathous also chaetognathan also chaetognath (in adjectival form)

chalaziferous
chalcedonous also chalcedonic
chalybeous
champertous
chancrous
chargeous (Obsolete)
chartaceous also papery
chasmogamous
cheiropterous
chelicerous
cheliferous
chenopodiaceous
chilognathous
chilopodous
chilostomatous
chiropterophilous
chiropterous also chiropteran (in adjectival form)
chitinous also chitinoid
chivalrous
chlamydeous
chlorellaceous
chlorinous
chlorophyllous also chlorophyllose
chlorous
choledochous
chondrigenous
chondromatous
chondroosseous
choripetalous
chromatogenous

chromatophilous also chromatophilic, chromophilous, chromophilic (adjectives) also chromatophil, chromophil (nouns, adjectives)

chromatophorous also chromatophoric
chromophilous (see chromatophilous)
chromophorous also chromophoric
chromous
chrysocarpous
chunderous (Australian English, Vulgar)
chylaceous
chylaqueous
chyliferous
chylocaulous
chylophyllous
chylous
chymiferous
chymous
cibarious
cichoraceous
Cilicious (Obsolete)
cinchonaceous
cinderous also cindery
cineraceous same as cinereous
cinereous also cineritious
circuitous
circulatorious (Obsolete)
circumambagious
circumfluous
circumforaneous (Obsolete)
circumlocutious
circumterraneous
cirrhiferous same as cirriferous
cirrhogenous also cirrhogenic
cirrhous same as cirrous
cirriferous
cirrigerous
cirrocumulous
cirrous also cirrose
cistaceous
citreous
citrous also citrus (in adjectival form)
cladanthous same as pleurocarpous
cladocarpous same as pleurocarpous
cladocerous also cladoceran (in adjectival form)
clamorous (American English) or clamourous (British English)
clangorous (American English) or clangourous (British English)
clangous (Obsolete)
clavigerous
cleistocarpous also clistocarpous
cleistogamous also cleistogamic
clistocarpous same as cleistocarpous
cnidogenous
cnidophorous
cobaltiferous
cobaltous
cocciferous (Obsolete)
coccineous
coccous also coccic, coccal
coccygeous (Rare) also coccygeal
coconscious also a noun
coelacanthous
coelogynous (Rare)
coelospermous
coenosarcous also coenosarcal
coetaneous
coevous (Obsolete) also coeval (in adjectival form)
coinfectious
coinstantaneous also simultaneous
coleopterous
collagenous
collatitious (Obsolete)
collembolous also collembolan (in adjectival form)
collenchymatous also collenchymatic
colobomatous
colostrous
columbiferous
columbous also niobous
comatous same as comatose
combustious (Obsolete) also inflammable
commentitious (Obsolete) also fictitious, imaginary
commodious
comous
compendiarious (Obsolete) same as compendious
compendious
complicitous
compositous (Rare)
compunctious
concavous also concave (in adjectival form)
conceptious (Obsolete)
conchiferous
conchylaceous also conchyliaceous
conchylious same as conchylaceous
concinnous
concolorous (American English) or concolourous (British English)
concupiscentious (Obsolete) same as concupiscent
condylomatous
confervaceous
confervous also conferval
congenerous also congeneric (in adjectival form)
congenious (Obsolete) also congeneric (in adjectival form)
congruous
conidiophorous
coniferous
connutritious (Obsolete)
consanguineous also consanguine, consanguineal
conscientious
conscious also a noun
consectaneous
consentaneous
consonous also symphonious
conspicuous
contagious
contemporaneous
contemptuous
contentious
conterminous also conterminal
conterraneous also conterranean
contiguous
continuous
contradictious
contrarious (Rare)
contumacious
contumelious
convicious (Obsolete)
convolvulaceous
copious
coprophagous
coprophilous also coprophilic
corallaceous
coralliferous also coralligenous, coralligerous
coralligenous also coralligerous, coralliferous
coralligerous also coralliferous, coralligenous
coriaceous also corious
cormous
cornaceous
corneocalcareous
corneous
corniferous
cornigerous (Obsolete)
corollaceous
corolliflorous
corpusculous also corpuscular, corpusculated
corticiferous
corticolous
corticous also corticose
corymbiferous
corymbous also corymbose
cost-conscious or cost conscious
costiferous
cotemporaneous same as contemporaneous
coterminous also coterminal
cottonous (Rare)
cotyledonous also cotyledonal, cotyledonary
cotyligerous
courageous
courteous
covetous
covinous (Obsolete) also deceitful, fraudulent, collusive
crankous (Scottish English) also cranky
crapulous
crassulaceous
craterous also crateral
crebrous (Obsolete) also frequent, numerous
credulous
creophagous also carnivorous, flesh-eating
crepusculous also crepuscular
cretaceous
Cretaceous
cretinous
cribrous also cribriform
criminous (Archaic) same as criminal (in adjectival form)
crinigerous (Rare)
croceous (Rare)
croupous also croupy
cruciferous
crucigerous
cruentous (Obsolete) also cruentate (Obsolete) also blood-smeared
crustaceous
cryophilous also cryophilic

cryptogamous same as aetheogamous also cryptogamic, cryptogamical

cryptonymous
crystalliferous also crystalligerous
ctenophorous also ctenophoric also ctenophoran (in adjectival form)
cucurbitaceous
culmicolous
culmiferous
cultrivorous
cumbrous also cumbersome
cumulous
cunctatious also cunctatory, cunctative
cupidinous
cupreous
cupriferous
cuprous
cupuliferous
curculionidous
curious
curnaptious (Scottish English)
curvaceous or curvacious
cutaneous
cycadaceous
cyclanthaceous
cyclospermous
cyclostomatous also cyclostomate
cyclostomous
cylindraceous
cymbocephalous also cymbocephalic
cymiferous
cymophanous
cymotrichous
cymous also cymose
cynopodous
cyperaceous
cystogenous
cystomatous
cystomorphous also cystoid (in adjectival form)
cytogenous
cytophagous also cytophagic
dactylopterous
daedalous
dangerous
dartrous
dasyphyllous
debaucherous
decamerous
decagynous also decagynian
decandrous also decandrian
decaphyllous
decapodous
deceptious (Rare)
deciduous
declinous also declinate
declivitous
declivous also declivent
decorous
dedecorous (Rare)
defamous (Obsolete) same as defamatory
defectious (Obsolete) also defective, imperfect
defectuous (Obsolete) also defective, imperfect
defluous (Obsolete)

degenerous (Obsolete) also degenerate (in adjectival form), base (in adjectival form)

deglutitious
deignous (Obsolete) also haughty, disdainful
deinteous (Obsolete) also deintevous (Obsolete)
deiparous (Obsolete)
deleterious
deletitious
delicious
delightous (Obsolete) also delightful
delirious
demeritorious
demiurgeous also demiurgic, demiurgical
dendrologous also dendrologic
dentiferous also dentigerous
dentulous
depilous
dermatogenous
desidious (Obsolete) also lazy, idle, slothful
desirous
desmogenous
desmognathous
despiteous also despiteful, spiteful
despitous (Obsolete) same as despiteous
desultorious (Rare) also desultory
detractious (Rare) also detractory
deuteranomalous
devious
dexterous also dextrous
dextrogerous also dextrogyrate, dextrogyre
diachronous
diadelphous
diadromous
dialypetalous
diamantiferous
diamondiferous same as diamantiferous
diandrous
diaphanous
diathermanous
diathermous same as diathermal
diatomaceous
diatomous
dicacious (Obsolete) also talkative, pert, saucy
dicephalous
dichlamydeous
dichogamous also dichogamic
dichotomous
dichroous also dichroic
diclinous
dicoccous
dicotyledonous
dicrotous also dicrotal, dicrotic
didactylous
didelphous also didelphian, didelphic
didymous
didynamous
diecious (American English) or dioecious (British English) also dioicous
diestrous (American English) or dioestrous (British English)
digamous
digenous
digonous
digynous
dimerous
dimorphous also dimorphic
dioecious (British English) or diecious (American English) also dioicous
dioestrous (British English) or diestrous (American English)
dioscoreaceous
dipetalous also bipetalous
diphyllous
diplopodous
diplostemonous
dipnoous
dipterocarpaceous also dipterocarpous
dipterous
dipyrenous
direptitious (Rare)
dirhinous
disadvantageous
disadventurous (Obsolete) also unprosperous, unfortunate
disanalogous
disastrous
disaventrous (Archaic) same as disadventurous
disceptatious (Rare)
disciferous
disciflorous
discodactylous
discommodious
discomycetous
discontiguous (Scottish English) also disconnected
discontinuous
discophorous also discophoran (in adjectival form)
discordous (Obsolete)
discourteous
discous also discoid (in adjectival form)
discriminous (Obsolete) also hazardous, dangerous
disdainous (Obsolete) also disdainful
disepalous
disgracious
disharmonious
disingenuous
dispendious
dispermous
dispiteous (Archaic) also pitiless
disporous
disputatious also disputative
disquietous (Rare)
dissensious (Rare) same as dissentious
dissentaneous (Rare)
dissentious also contentious, quarrelsome
disslanderous (Obsolete) same as slanderous
distichous
distractious (Obsolete) same as distractive
disvantageous (Obsolete) same as disadvantageous
dithecous
dithionous also dithionic
ditokous
ditrichotomous
dividuous (Rare) also divided, dividual
dizygous also dizygotic
dodecagynous
dodecandrous
dolichocephalous also dolichocephalic
doloriferous
dolorous
doniferous (Rare)
dorsiferous
dorsiparous same as dorsiferous
doubtous (Obsolete) same as doubtful
dromaeognathous
droseraceous
drupaceous
dubious
dulcifluous (Rare)
dumous also dumose
duplicitous
durous (Obsolete, Rare) also hard
duteous
dynamogenous also dynamogenic
ebrious (Rare)
eburneous also eburnean
echinodermatous also echinodermal
ectogenous also ectogenic
eczematous
edacious

edematous (American English) or oedematous (British English) also edematose (Am Eng) or oedematose (Br Eng)

edentalous also edentate (in adjectival form)
edentulous also edentulate
edriophthalmous
edulious (Obsolete) also edible
effectuous (Obsolete) also effectuose (Obsolete) same as effective (in adjectival form)
efferous (Obsolete) also fierce
efficacious
eglandulous also eglandulose
egregious
electrotonous also electrotonic
elytrigerous
elytrous
embryoniferous
embryous (Rare) also embryonic
emissitious (Obsolete)
emphysematous
emulous
enantiomorphous also enantiomorphic
enantiostylous
encephalous
enchondromatous
endecagynous
endecaphyllous
endochylous

endocrinous also endocrinic, endocrinal also endocrine (in adjectival form)

endogamous also endogamic
endogenous
endophagous
endophyllous
endophytous
endorhizous also endorhizal
endosarcous
endosporous
endovenous also intravenous
enervous (Rare) also enervated
enginous (Obsolete)
enhydrous
enneagynous
enneandrous also enneandrian
enneapetalous
enneaspermous
enormous
ensiferous
enterocoelous also enterocoelic
entogenous same as endogenous
entomophagous also insectivorous
entomophilous
entomostracous
entophytous also entophytal
enubilous (Rare)
envidious (Obsolete) also envious
envious
eosinophilous also eosinophilic
epanthous
ephemerous also ephemeral
epicureous
epidermeous (Rare) also epidermal
epigaeous (British English) or epigeous (American English)
epigenous
epigeous (American English) or epigaeous (British English)
epignathous
epigonous also epigonic
epigynous
epileptogenous
epipetalous
epiphanous also epiphanic
epiphyllous also epiphylline
epiphylospermous
episepalous
epitheliomatous
epitropous
epixylous
eponymous
equanimous
equilibrious
equiponderous
equipondious (Obsolete) same as equiponderous
equisetaceous
equitemporaneous (Obsolete) same as contemporaneous
equivorous
ericaceous
ericeticolous
erinaceous
eriophorous
eriophyllous
erogenous also erogenic
erotogenous also erotogenic same as erogenous
erroneous
eruginous (American English) or aeruginous (British English)
erysipelatous als erysipelous
erythematous also erythemic, erythemal
estiferous (Rare)

estrous (American English) or oestrous (British English) also estral (Am Eng) or oestral (Br Eng)

ethereous (American English) or aethereous (British English)
eucarpous also eucarpic
euphonious
euphonous (Rare) same as euphonious
euphorbiaceous
eurhipidurous
eurokous
eurycerous
euryphagous
eurythermous also eurythermic
eutropous
exalbuminous
exanguious (Obsolete) same as exsanguious
exangulous (Rare)
exanimous (Obsolete) also lifeless, dead
exanthematous also exanthematic
exceptious (Obsolete)
excrementitious also excremental
excrementous
exemptitious (Obsolete) also separable
exequious (Obsolete) also funereal
exiguous
eximious (Obsolete) also distinguished, eminent
exitious (Obsolete) destructive, fatal
exogamous
exogenous also exogenetic
exophagous
exophyllous
exorhizous also exorhizal
exosporous also exosporal
expeditious
expiatorious also expiatory
expurgatorious (Obsolete) also expurgatory
exsanguineous also exsanguious
exsanguinous also exsanguine
exsuccous
extemporaneous
exterraneous
extispicious (Obsolete)
extogenous same as exogenous
extortious (Obsolete) also extortionate
extrafoliaceous
extraforaneous
extrageneous
extraneous
exuccous (Obsolete) same as exsuccous
fabaceous also leguminous
fabulous
facetious
facinerious (Obsolete)
facinorous (Obsolete) also wicked
factious
factitious
facundious (Archaic)
fagaceous
falciferous
fallacious
famous
fantabulous (Slang - a combination of fantastic and fabulous)
farinaceous
farraginous
fascinous (Obsolete)
fashion-conscious
fashious (Scottish English) also troublesome
fastidious
fastuous
fatiferous (Rare) also deadly also mortal (in adjectival form)
fatuitous
fatuous
favaginous
favillous (Obsolete)
favous
featous also featuous, shapely
feateous (Obsolete) also neat
febriferous
felicitous
felonious
felonous (Obsolete) also felonious, wicked
feracious (Rare) also fruitful
fermentitious
ferocious
ferreous similar to ferrous
ferriferous
ferrous
ferrugineous (Rare) same as ferruginous
ferruginous
ferulaceous
fervorous (American English) or fervourous (British English) (Rare)
festivous (Rare)
festucous (Obsolete)
fetiferous (American English) or foetiferous (British English)
fetiparous (American English) or foetiparous (British English)
fetuous (Obsolete) also neat
feverous also feverish
fibrillous
fibrinogenous also fibrinogenic
fibrinous
fibroadenomatous
fibrocartilaginous
fibromatous
fibroserous
fibrous
fictious (Rare) same as fictitious
fictitious
fiddious (Literary)
figure-conscious
filaceous
filamentous
filibusterous
filiferous
filipendulous
filoplumaceous
fimicolous
fissiparous
fistulous also fistular, fistulate
flagelliferous
flagitious
flamineous also flaminical
flammeous (Obsolete)
flammiferous
flammivomous
flatterous (Archaic) also flattering
flatuous (Obsolete)
flavicomous (Rare) also yellow-haired
flavorous
flavous (Obsolete) also yellow (in adjectival form)
fletiferous (Obsolete)
flexanimous (Obsolete)
flexuous
flirtatious also flirty
floricomous (Rare)
florideous
floriferous
flosculous
fluctiferous
fluctisonous
fluminous
fluorous
foetiferous (British English) or fetiferous (American English)
foetiparous (British English) or fetiparous (American English)
foliaceous
foliferous also written foliiferous
foliicolous
foliophagous
folious also foliose
folivorous
folliculous
foraminiferous also foraminiferal
foraminous also foraminate
foreconscious also a noun
formicivorous
fortitudinous
fortuitous
fossiliferous
fossorious
founderous also foundrous
frabjous (Informal)
fractious
fringillaceous also fringilline
frivolous
frondiferous
frondous also frondose
fructiferous
fructivorous same as frugivorous
fructuous
frugiferous same as fructiferous
frugivorous
frumentaceous
frumentarious (Rare)
frumious
frustraneous (Obsolete)
fruticous (Rare) also fruticose
fucivorous
fucous also fucoidal also fucoid (in adjectival form)
fugacious
fulgorous
fulgurous
fuliginous
fulmineous
fulminous
fulvous
fumacious
fumiferous
fumous
funebrious (Obsolete) also funebrial (Obsolete) also funereal
fungivorous
fungous (not to be confused with fungus)
furacious (Obsolete) also thievish
furciferous (Rare) also rascally, scandalous
furfuraceous
furfurous (Rare) similar to furfuraceous
furious
furunculous also furuncular
fuscous
futilous (Obsolete) also futile
galactophagous
galactophorous also lactiferous
gallinaceous
gallous
gametogenous also gametogenic
gamopetalous also sympetalous
gamophyllous
gamosepalous also synsepalous
gangrenous
ganocephalous
garnetiferous
garous
garrulous
gaseous
gasteropodous same as gastropodous
gastriloquous (Rare) same as ventriloquous
gastropodous
gastrurous
gealous (American Slang - a combination of gay and jealous)
geitonogamous
gelatigenous
gelatiniferous
gelatinous
geminiflorous
geminous
gemmaceous
gemmeous
gemmiferous same as gemmiparous
gemmiparous
gemmuliferous
generous
gentianaceous
gentilitious also gentilitial
geodephagous
geodiferous
geophilous
geophagous
geosynchronous also geostationary
geraniaceous
geratologous also geratologic
germanous
gerontogeous
ghetto-fabulous (Informal)
gibbous also gibbose
gingerous also reddish (pertaining to hair)
gingivo-osseous
ginormous (Slang - combination of gigantic and enormous)
glabrous also glabrate
glacious
glaireous also glairy
glamorous (American English) or glamourous (British English)
glanderous
glandiferous
glanduliferous
glandulous also glandular
glareous
glaucomatous
glaucous
glebous also gleby
gliomatous
globiferous
globous also globose
globuliferous
globulous also globular
glomerous (Obsolete)
glomuliferous
glorious (American English) or glourious (British English)
glumaceous
glumiferous
glutenous
glutinous
gluttonous
gnathostomatous
goitrous
goloptious or goluptious (Slang) also voluptuous
gonimous
gonophorous also gonophoric
gorgeous
gossaniferous
goustrous (Scottish English) also boisterous
gracious
graminaceous
gramineous
graminicolous
graminifolious
graminivorous
grandevous (Rare)
grandiloquous also grandiloquent
grandinous (Rare)
graniferous
granivorous
granuliferous
granulomatous
granulous
gratuitous
gregarious
gressorious also gressorial
grievous
griseous
grumous also grumose
guaniferous
gummatous
gummiferous
gummous also gummy
gumptious
gum-resinous
guttiferous
guttulous (Obsolete)
gymnocarpous also gymnocarpic
gymnospermous also gymnospermal, gymnospermic
gynandromorphous also gynandromorphic
gynandrous
gynantherous
gynodioecious
gynomonoecious
gypseous
gypsiferous
gyrous also gyrose
haemapodous (British English) or hemapodous (American English)
haematogenous (British English) or hematogenous (American English)

haematophagous (British English) or hematophagous (American English)

hagiolatrous
half-conscious
half-contemptuous
half-fictitious
half-ingenious
half-ingenuous
half-rebellious
half-serious
halitous
halituous
halogenous
halophilous also halophilic
hamamelidaceous
hamous (Urban Slang - combination of handsome and famous)
hamulous also hamulose, hamular, hamulate
hapaxanthous also hapaxanthic, semelparous
haplostemonous
harberous (Obsolete) same as harborous
harborous
harmonious
hazardous
hebetudinous
hederaceous
hederiferous
heinous
heliolatrous
heliophilous
hellaceous or hellacious
helminthous
hemapodous (American English) or haemapodous (British English)
hematogenous (American English) or haematogenous (British English)

hematophagous (American English) or haematophagous (British English)

hemigamous
hemimetabolous also hemimetabolic
hemimetamorphous
hemipterous also hemipteran
hemitropous also hemitropic
hemizygous
hemoglobinous also hemoglobic
hepatogenous
heptagynous
heptamerous
heptandrous
heptaphyllous
heptaspermous
herbaceous
herbiferous
herbivorous
herbous
hercogamous
hetercephalous
heterocarpous
heterochlamydeous
heterochromous
heterochronous also heterochronic, heterochronistic
heteroclitous (Obsolete) same as heteroclitic
heterocystous
heterodactylous also heterodactyl
heterodromous
heteroecious
heterogamous
heterogeneous
heterogenous
heterogonous also heterogonic
heterogynous
heteroicous
heterologous
heteromerous
heteromorphous also heteromorphic
heteronomous
heteronymous
heteropelmous
heterophyllous
heteropodous
heteropterous also heteropteran
heterosomatous (Obsolete)
heterosporous
heterostylous also heterostyled
heterotactous also heterotaxic
heterotopous also heterotopic
heterotrichous
heterotropous same as amphitropous
heterozygous also heterozygotic
hexadactylous
hexagynous
hexamerous
hexandrous
hexapetalous
hexaphyllous
hexapodous also hexapod (in adjectival form)
hexapterous
hideous
hilarious
Hippodamous (Rare) same as Hippodamian
hippophagous
hircinous also hircine
hirsutulous same as hirtellous
hirtellous also hirsutulous
hirudinous (Obsolete)
hispidulous
histogenous
holocarpous also holocarpic
hologamous
holometabolous also holometabolic
holophanerous same as holometabolic
holosericeous
holostomatous

homeomerous (American English) or homoeomerous (British English) also homoiomerous

homeomorphous (American English) or homoeomorphous (British English) also homeomorphic (Am Eng) or homoeomorphic (Br Eng)

homeothermous (American English) or homoeothermous (British English) also homeothermic (Am Eng) or homoeothermic (Br Eng)

homochlamydeous
homochromous
homochronous
homodromous
homodynamous

homoecious also autecious (American English) or autoecious (British English)

homoeomerous (British English) or homeomerous (American English) also homoiomerous

homoeomorphous (British English) or homeomorphous (American English) also homoeomorphic (Br Eng) or homeomorphic (Am Eng)

homoeothermous (British English) or homeothermous (American English) also homoeothermic (Br Eng) or homeothermic (Am Eng)

homogamous
homogeneous
homogenous
homogonous

homoiomerous also homeomerous (American English) or homoeomerous (British English)

homologous
homomallous
homomorphous
homonomous
homonymous
homophonous
homopterous also homopteran (in adjectival form)
homosporous
homostylous also homostylic, homostyled

homothermous same as homeothermous (American English) or homoeothermous (British English)

homotonous
homotropous
homozygous also homozygotic
horrendous
horrisonous (Obsolete)
horrorous (British English)
hugeous also huge
humicolous
humongous or humungous
humorous (American English) or humourous (British English)
hybridous also hybrid (in adjectival form)
hydatidinous also hydatid (in adjectival form)
hydrocarbonaceous
hydrocarbonous also hydrocarbonic
hydrocephalous also hydrocephalic
hydrogenous
hydrophanous
hydrophilous
hydrophobous also hydrophobic
hydrophytous also hydrophytic
hydrosomatous also hydrosomal
hydrosulfurous or hydrosulphurous
hydrous
hygrophanous
hygrophilous also hygrophytic
hylophagous same as xylophagous
hylotomous
hymenophyllaceous
hymenopterous also hymenopteran
hyperbarbarous
hypercautious
hyperconscientious
hyperconscious
hyperdelicious
hyperdicrotous also hyperdicrotic
hyperfastidious
hypergamous
hyperhilarious
hyperlustrous
hypermiraculous
hypernitrogenous
hyperorthognathous
hyperprognathous
hyperpromiscuous
hyperridiculous
hyperscrupulous
hypersensuous
hypersuspicious
hypertrophous
hyperviscous
hypervoluminous
hypnogenous
hypochlorous
hypocotylous
hypocraterimorphous also hypocrateriform
hypodicrotous also hypodicrotic

hypogaeous (British English) or hypogeous (American English) also hypogaeal (Br Eng) or hypogeal (Am Eng)

hypogalactous
hypogenous
hypognathous
hypogynous
hyponitrous
hypophosphorous
hypophyllous
hyposulfurous or hyposulphurous
hysteranthous
hystricomorphous
ichorous
ichthyolatrous
ichthyomorphous also ichthyomorphic
ichthyophagous
icosandrous also icosandrian
icteritious also icteritous
idiocyclophanous same as idiophanous
idiomorphous
idiophanous
idiothermous also warm-blooded
idolatrous
idolous (Obsolete) same as idolatrous
idoneous
igneous
igniferous (Rare)
ignifluous (Obsolete)
ignigenous (Rare)
ignivomous (Rare)
ignominious
illecebrous (Obsolete) also alluring, enticing
illicitous (Rare) same as illicit
illuminous (Rare)
illustrious
illustrous (Obsolete)
illuxurious (Rare)
image-conscious
imaginous (Rare) same as imaginative
immelodious
immeritous (Obsolete) also undeserving
immomentous (Rare)
immorigerous (Obsolete) also rude, uncivil, disobedient
impecunious
impennous
imperious
imperspicuous
impervious also imperviable
impetiginous
impetuous
impious
impiteous
implexuous also implexed
imponderous (Obsolete) same as imponderable (in adjectival form)
imporous
importuous (Rare)
impostrous also imposturous
impropitious (Obsolete) same as unpropitious
improsperous (Obsolete) also unprosperous
inaniloquous
inauspicious
incanous
incapacious
incautious
incendious (Obsolete) also seditious, inflammatory
incestuous
incommodious
inconcinnous (Obsolete)
incongruous
inconscious (Obsolete) same as unconscious
inconspicuous
incontiguous
incredulous
incubous
incumbrous (Obsolete) also cumbersome, troublesome
incurious
indeciduous
indecorous
indigenous
indubious
inducteous
industrious
inebrious (Rare)
inefficacious
inermous (Archaic)
infamous
infandous (Obsolete) also unspeakable
infectious
infecundous (Obsolete)
infelicitous
infelonious
infestuous (Obsolete) also dangerous, harmful
influxious (Obsolete) also influential (in adjectival form)
informous (Obsolete) also shapeless
infraspinous also infraspinal, infraspinate
infructuous
infrugiferous
ingenious
ingenuous
inglorious
ingluvious (Obsolete) also gluttonous
ingracious (Obsolete) same as ungracious
inharmonious
inhomogeneous
inimicitious (Rare) also inimical, unfriendly
inimicous (Obsolete) also inimical, hurtful
iniquitous
iniquous (Obsolete) same as iniquitous
injudicious
injurious
innocuous
innoxious also innocuous, harmless
innubilous (Obsolete) also cloudless
innumerous also innumerable
innutritious
inodorous
inofficious
inquilinous also inquiline (in adjectival form)
inquisitorious (Obsolete) also inquisitorial
insalubrious
insectivorous
insensuous
insidious
insomnious
insonorous
insulous (Rare)
instantaneous
integrous
interacinous
intercartilaginous
intercavernous
intercutaneous
interfibrous
interfilamentous
interfluous also interfluent
interfoliaceous also interfoliar
interligamentous also interligamentary
intermedious (Rare) also intermediate (in adjectival form)
intermembranous
interosseous
interpetalous
interreligious
intersomnious (Rare)
interspinous
intertranspicuous (Rare)
intervillous
intracutaneous
intrafoliaceous
intravenous
invalorous
inventious (Obsolete) also inventive
invidious
invious (Rare) (not to be confused with envious) also untrodden
iodinophilous
iodous
iracundulous
iridaceous
irideous
iridious
iridous
irous (Obsolete) also irascible, passionate
irregulous (Obsolete) also lawless
irreligious
irreptitious (Obsolete) also surreptitious, spurious
irriguous (Archaic)
isagelous
isandrous
isanomalous
isanthous
ischiocavernous
isochronous also isochronal
isochroous
isodimorphous also isodimorphic
isodomous
isodynamous
isogamous
isogenous
isologous
isomerous
isomorphous
isonomous also isonomic
isopodous
isopogonous
isopterous
isospondylous
isosporous
isostemonous
isotrimorphous also isotrimorphic
isotropous also isotropic
jaculiferous
jasperous also jaspideous, jaspery
jealous
jeopardous
jocoserious
joyous
judicious
juglandaceous
julaceous also amentaceous
jumentous
juncaceous also juncous
kaligenous
katadromous variant spelling of catadromous
keratinous
keratogenous
laborious (American English) or labourious (British English)

laborous (American English) or labourous (British English) (Obsolete) same as laborious (Am Eng) or labourious (Br Eng)

lacteous
lactiferous
lactifluous
lacunous also lacunose
laemodipodous
lagomorphous also lagomorphic
lagopous
lamelliferous
laminiferous
laminous also laminose also laminate (in adjectival form)
lanciferous
languorous
laniferous also lanigerous
lanuginous also lanuginose
lapidarious
lapideous (Obsolete)
lapidicolous
lappaceous
larcenous
lardaceous
largifluous (Obsolete)
larviparous
larvivorous
lascious (Obsolete) same as lascivious
lascivious
latericeous also lateritious
laterifolious
lateritious also latericeous
laticiferous
latifolious also latifoliate
latirostrous also latirostral
latitudinous
lauraceous
lauriferous
leavenous
lecherous
lecythidaceous
leguminous
leiotrichous
lemuridous also lemuroid (in adjectival form)
lentiginous also lentiginose
lentous
leperous also leprous
lepidopterous also lepidopteral
lepromatous
leprous also leperous
leptocephalous also leptocephalic
leptodactylous
leptophyllous
lethiferous (Archaic) same as lethal
leucophyllous
leucous
libellous (British English) or libelous (American English)
libidinous
licentious
lichenous also lichenose

lickerous or licorous or likerous or liquorous (all Obsolete) also lickerish, eager, lustful

ligamentous also ligamental, ligamentary
ligneous
lignicolous also lignicole
ligniferous
ligniperdous
lignitiferous
lignivorous also xylophagous
lignous variant of ligneous
liguliflorous
liliaceous
limaceous
limbous
limicolous
limitaneous (Obsolete)
limivorous
limnophilous
limous
linguacious (Obsolete) same as loquacious
linigerous
lipomatous
lipothymous

liquorous or likerous or licorous or lickerous (all Obsolete) also lickerish, eager, lustful

lissencephalous
lissotrichous
lithodomous also lithophagous
lithogenous
litholatrous
lithophagous
lithophilous
lithophytous also lithophytic
lithotomous
litigious
lixivious also lixivial
lobeliaceous
loculous also loculose
loganiaceous
lomatinous
lomentaceous
longaevous (British English) or longevous (American English) (Archaic)
longanimous
longevous (American English) or longaevous (British English) (Archaic)
longimanous
loquacious
lubricious
lubricous
luciferous
lucifugous
lucriferous (Obsolete) similar to lucrative
ludibrious (Obsolete)
ludicrous
lugubrious
lumbaginous
luminiferous
luminous
lungeous (British English)
lupous (not to be confused with lupus)
luscious
lusorious (Obsolete)
lustrous
lutarious (Obsolete)
luteolous
luteous
luxurious
lycanthropous also lycanthropic
lycopodiaceous
lycotropous same as campylotropous
lyencephalous
lymphogenous also lymphogenic
lymphomatous
lyomerous
lyriferous
lysigenous
lythraceous
macrencephalous also macrencephalic
macrocarpous
macrocephalous also macrocephalic
macrodactylous
macropetalous
macrophagous
macrophyllous
macropodous
macropterous
macrotous
macrurous
magnanimous
magnesiferous
magnetiferous
magniloquous (Obsolete) also magniloquent
magnoliaceous
malacophilous
malacophyllous
malacopterygious
malacostomous
malacostracous
malarious also malarial, malarian
malevolous (Obsolete) also malevolent
malgracious (Obsolete)
malicious
mallophagous
malodorous
malpighiaceous
malvaceous
mammaliferous
mammiferous
manganesious same as manganous
manganesous same as manganous
manganiferous
manganous
manniferous
marasritaceous
margaritiferous
margarous (Obsolete)
marigenous
marlacious also marly
marmoraceous
marvellous (British English) or marvelous (American English)
masterous (Obsolete) also masterly
mastigophorous also mastigophoran (in adjectival form)
mastosquamous
materious (Obsolete) same as material (in adjectival form)
matriclinous also matroclinous, matroclinal
matrimonious (Rare) also matrimonial
matroclinous also matriclinous, matroclinal
meandrous
mecopterous
medicamentous also medicamental
medioxumous (Obsolete) same as intermediate (in adjectival form)
mediterraneous also inland (in adjectival form)
megacephalous also megacephalic same as macrocephalous
megalocephalous also megalocephalic
megalophonous
melancholious (Rare) same as melancholy
melaniferous
melanochroous
melanocomous also black-haired
melanospermous
melanous
melastomaceous
meliaceous
melicerous
meliphagous
melliferous also mellific
mellifluous
melligenous
melliphagous or mellivorous
mellivorous or melliphagous
melodious
melostemonous
membranaceous same as membranous
membraneous same as membranous
membraniferous
membranous
mendacious
menispermaceous
menstruous
menthaceous
meracious (Obsolete)
mercurous
merdivorous also coprophagous
meretricious
meritorious
merogonous also merogonic
mesaticephalous also mesaticephalic
mesenchymatous also mesenchymal
mesocephalous also mesocephalic
mesognathous also mesognathic
mesomorphous also mesomorphic
mesomyodous
mesophilous also mesophilic also mesophile (in adjectival form)
mesophyllous also mesophyllic
metachlamydeous
metagnathous
metalliferous
metamorphous
meteorous
meticulous
metestrous (American English) or metoestrous (British English)
miasmatous (Obsolete)
miasmous (Obsolete) also miasmal, miasmic, miasmatic, miasmatical
micaceous
micrencephalous
microcephalous also microcephalic
microdontous also microdont, microdontic
microfilamentous
microlepidopterous
microphagous
microphonous also micracoustic or microcoustic
microphyllous
microporous
micropterous
microsporous also microsporic
microstomatous also microstomous
microvillous also microvillar
migrainous
mimosaceous
minaceous (not to be confused with minacious)
minacious
minious (Obsolete)
miraculous
misadventurous also unfortunate
misandrous
miscellaneous
mischievous
misgracious (Obsolete)
misogynous also misogynic, misogynistic
misventurous
miszealous (Obsolete)
mixogamous
molendinaceous
molendinarious
moliminous (Obsolete)
mollitious
molluscous
molybdenous
molybdous
momentaneous
momentous
monadelphous also monadelphian
monandrous
monanthous

monecious (American English) or monoecious (British English) also monoicous

monestrous (American English) or monoestrous (British English)
monocarpous
monocephalous
monocerous
monochlamydeous
monoclinous
monocotyledonous
monoculous also monocular (in adjectival form)
monodactylous also monodactyl
monodelphous also monodelphian (in adjectival form)
monodomous

monoecious (British English) or monecious (American English) also monoicous

monoestrous (British English) or monestrous (American English)
monogamous
monogenous also monogenetic
monogrammous also monogrammic
monographous (Obsolete) also monographic
monogynious same as monogynous
monogynous also monogynious, monogynic
monohemerous

monoicous also monecious (American English) or monoecious (British English)

monolatrous
monomerous
monomorphous also monomorphic
monoousious also monoousian
monopetalous
monophagous
monophanous
monophyllous
monopyrenous
monorhinous also monorhinal, monorhine
monosemous
monosepalous
monospermous also monospermal
monostichous
monostomous also monostome
monostylous
monothalamous
monothecous also monothecal
monotocous
monotomous
monotonous
monotrematous
monotrichous also monotrichate, monotrichic
monoxenous also monogenetic
monoxylous
monozygous also monozygotic
monstrous also monstruous (Obsolete)
monstruous (Obsolete) same as monstrous
monticolous
monticulous also monticulate
montigenous
moraceous
morbiferous also morbific
morbillous
mordacious
morigerous (Obsolete) also obedient, obsequious
morosous (Obsolete) same as morose
mortiferous also deadly, fatal
moschiferous
mountainous
mucedinous
muciferous also mucigenous, muciparous
mucigenous also muciferous, muciparous
mucilaginous
mucinous
muciparous also muciferous, mucigenous
mucocutaneous
mucophagous
mucosanguineous also mucosanguinolent
mucoserous
mucous (not to be confused with mucus)
multanimous
multicavous
multifarious
multiferous (Rare)
multifibrous
multifidous also multifid
multifistulous also multifistular
multiflorous
multiformous (Obsolete) same as multiform
multigenerous
multijugous
multiloquous (Obsolete) also loquacious
multinodous
multinominous
multiparous
multiplicious (Obsolete) also manifold (in adjectival form)
multiramous
multireligious
multiscious (Obsolete)
multisiliquous
multisonorous
multisonous
multispermous
multispinous
multitudinous
multivagous
multivarious
multivious (Obsolete)
murderous
muriatiferous (Obsolete)
murmurous
musaceous
musculocutaneous
musculotendinous
musculous (Obsolete) also muscular
muticous also muticate
mutilous also mutilated, defective, imperfect
mutinous
mycetomatous
mycetophagous
mycophagous
myelencephalous
myelogenous also myelogenic
myelomatous
myiophilous also myophilous
myogenous also myogenic
myomatous
myophilous
myriacanthous

myriapodous also myriapodan also myriapod or myriopod (in adjectival form)

myriophyllous
myristicivorous
myrmecophagous
myrmecophilous
myrtaceous
mysterious
myxedematous (American English) or myxoedematous (British English)
myxomatous
myxomembranous
myxomycetous

Refer to List 2 for additional words ending with the suffix -OUS