20110326

Words ending in -OR

Words ending with the suffix -OR

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


Note: More than 99% of the time, the suffix -OR is preceded by the letter T, and thus it would suggest that the suffix here is actually -TOR. (This is true in a small number of cases.) However, if one would drop the supposed suffix of -TOR from the word, one would be left with a non-word; for example: abductor = abduc. Clearly, this is incorrect. Rather, abductor = abduct (the root word).


abactor (Obsolete)
abator
abbreviator
abdicator
abductor
aberuncator
abettor or abetter
ablator
abnegator
abominator
abrogator
absolvitor (Scottish English, Law)
abstractor
accelerator
accensor
accentor
accentuator
acceptor
accommodator
accumulator
acquisitor
activator
actor
actor-director
actuator
adaptor or adapter
addressor or addresser
adductor
adjudicator
adjuror or adjurer
adjustor or adjuster
adjutator (Obsolete) same as agitator
adjutor (Archaic) also helper, assistant
administrator
admonitor also admonisher
adulator
adulterator
advisor or adviser
advocator
aerator
aerogenerator also windmill
aeromotor
affeeror or affeerer
agglomerator
aggravator
aggregator
aggressor
agistator same as agistor or agister
agistor or agister
agitator
agricultor (Rare) also agriculturist, agriculturalist, farmer
alastor
alienator
alienor or aliener
allegator (not to be confused with alligator)
alleviator
alligator (not to be confused with allegator)
alliterator
allocator
alluminor (Obsolete)
alternator
amalgamator
ambassador
amboceptor same as hemolysin (American English) or haemolysin (British English)
ambulator
ameliorator also meliorator
amputator
ancestor
anchor
animator or animater
annihilator
annotator
annunciator
antecessor also predecessor
antecursor (Obsolete) same as precursor
anticipator
anticoagulator
antioxygenator
antipredator
apparitor also paritor
appellor
applicator
appointor
appreciator
approbator
appropriator
approximator
arbitrator
arborator (Obsolete)
archchancellor
architector (Obsolete) same as architect
archtraitor
arendator
armor (American English) or armour (British English)
arpentator (Rare) also land surveyor
arrestor or arrester
arrogator
arteriomotor (this word is an adjective only)
articulator
asphyxiator
aspirator
assassinator
assentator (Rare) also flatterer
assentor or assenter
assertor or asserter
assessor
assignor (Law) or assigner
assimilator
assistor (Law) or assister
assizor (Scottish English, Law) also juror
associator
assuror or assurer
astronavigator
athanor
attenuator
attestator also attestor, attester
attestor or attester also attestator
attractor or attracter
attributor or attributer
auditor
augmentor or augmenter
auscultator
authenticator
author
autocrator (Archaic) same as autocrat
avenor (Obsolete) or avener (Obsolete)
averruncator
aviator
avigator
bachelor
bailor
bargainor (Law)
baroceptor also baroreceptor also called pressoreceptor
barrator or barretor or barrater
benefactor
bettor or better
bevor
bimotor
bioreactor
biosensor
bisector
bittor also bittern
bivector
boardsailor also windsurfer
boor
brachiator
bronchodilator
buccinator
cachinnator
calcinator
calculator
calefactor
calibrator or calibrater
calorimotor
calorisator (British English) or calorizator (American English)
calumniator
campeador also champion
cantor
capacitor also called condenser
capeador
capitulator
captivator
captor
carbonator

carburetor or carburator (American English) or carburettor or carburetter (British English)

cardioaccelerator
cardiomotor (this word is an adjective only)
castigator
castor or caster
castrator
causator (Rare)
caveator
celebrator or celebrater
censor also a verb
centuriator (Rare) also centurist (Rare)
cephalomotor (this word is an adjective only)
cessor (Obsolete) same as assessor
chador also chuddar, chudder, chuddah
champertor
chancellor
chantor or chanter
chelator also chelating agent
chemoreceptor
chiropractor
chlorinator
cholinoreceptor
cinerator also incinerator
circulator
circumferentor
circumnavigator
circumventor or circumventer
citator (Rare)
coactor
coadjutor
coagulator
coanchor also a verb
coauthor also a verb
coconspirator or co-conspirator
cocreator
cocurator
codebtor
codirector
coeditor
coexecutor
cofactor
cogenerator
cogitator
cognisor (British English) or cognizor (American English)
cohabitor or cohabiter
coheritor also coheir
coinheritor also coheir
coinventor
coinvestigator
coinvestor
cojuror
colessor also joint lessor
collaborator
collator
collector
collimator
collocutor
combinator
combustor
commemorator
commendator also commendatary
commentator
commentor or commenter
comminator
comminutor
commiserator
communicator
commutator
compactor
companator same as impanator
compandor or compander
comparator
compensator
competitor
compilator (Obsolete) same as compiler
complicator
compositor
compotator
comprador also compradore
comprehensor (Obsolete)
compressor
compulsitor (Scottish English, Law)
compurgator
computator
concentrator
conciator
conciliator
concionator
concoctor or concocter
condemnor or condemner
condor
conductor
confabulator
confederator
confessor or confesser
confirmator also confirmer
confirmor (Law) or confirmer
confiscator
Confiteor
conformator
confutator
conglomerator also conglomerateur
conglutinator
congratulator
congregator
conisor (Obsolete) same as cognisor (British English) or cognizor (American English)
conjector (Obsolete) same as conjecturer
conjugator
conjurator
conjuror or conjurer
connector or connecter
connusor (Obsolete, Law) same as congisor (British English) or cognizor (American English)
conqueror
conquistador
consecrator or consecrater
conservator
considerator (Obsolete) same as considerer
consignor or consigner
consolator also consoler
consolidator
conspirator
constitutor or constituter
constrictor
constructor or constructer
consultor or consulter also consultant
consummator
contactor
contaminator
contemnor or contemner
contemplator
continuator
contractor
contradictor or contradicter
contratenor
contributor
controversor or controverser (Obsolete) same as disputant (as a noun)
conusor (Obsolete, Law) same as cognisor (British English) or cognizor (American English)
convector
convenor or convener
convertor or converter
conveyor or conveyer
convocator
cooperator or co-operator
coordinator or co-ordinator
copastor
coprocessor
coproprietor
copyeditor or copy editor
corepressor
cornutor (Rare)
corporator
corrector
corregidor
correlator
corridor
corroborator
corrugator
corruptor or corrupter
cosmocrator same as cosmocrat
cosponsor also a verb
councillor (British English) or councilor (American English)
counsellor (British English) or counselor (American English)
counterdemonstrator
countertenor also called male alto
counterterror
countor (Obsolete)
covenantor or covenanter
creator
creditor
cremator
criminator
cultivator
cunctator
curator
cursitor
cursor
cuspidor
deactivator
deaerator
debitor (Obsolete) same as debtor
debtor
decapitator
decelerator
decimator
declamator (Rare) also declaimer
declarator (Scottish English, Law)
declinator
decollator
decompressor
deconstructor
decontaminator
decorator also an adjective
decorticator
dedicator
deductor
defaecator (British English) or defecator (American English)
defalcator
defecator (American English) or defaecator (British English)
defector
defensor
defibrillator
deflagrator
deflator
deflector
defoliator
deforceor (Obsolete) same as deforciant
degerminator
dehydrator
delator or delater
delegator
deliberator
delineator
demarcator
demodulator
demonstrator
demotivator
denigrator
denitrificator also denitrifier
denominator
denunciator
dephlegmator
depictor or depicter
depilator
depopulator
depositor
deprecator
depreciator
depredator
depressomotor also an adjective
depressor
depurator
deputator (Rare)
deregulator
derogator also detractor
desalinator
descriptor
desecrator or desecrater
desiccator
designator
desolator or desolater
destructor (1) (British English) also incinerator (American Engish)
destructor (2) (Rocketry)
destructor (3) (Rare) also destroyer
detector
determinator or determinater
detonator
detoxicator
detractor
devastator
deviator
devisor
devotor (Obsolete)
dialector
dictator
differentiator
diffusor or diffuser
digestor or digester (Chemistry)
digladiator (Archaic, Literary)
dilapidator
dilatator same as dilator
dilator or dilater also dilatator
dilutor or diluter
director
disanchor (this word is a verb only)
disarticulator
disceptator (Rare)
discontinuor
discreditor
discriminator
disheritor
disinfector
disintegrator
disjunctor
dispensator (Obsolete)
dispositor
dispossessor
disruptor or disrupter
dissector
disseisor (British English) or disseizor (American English)
disseminator
dissertator
dissimulator
dissipator or dissipater
distractor or distracter
distrainor or distrainer
distributor or distributer
divaricator
divinator (Rare) also diviner
divisionor (Obsolete)
divisor
doctor also a verb
domesticator
dominator
donator
donor also an adjective
ductor
duplicator
duressor
dynamotor
editor
educator
eductor also ejecter (in one sense of the word)
edulcorator
effector also effecter (in one sense of the word)
egressor (Rare)
eigenvector also characteristic vector
ejaculator
ejector
elaborator
elector
electromotor
electroreceptor
elevator
elicitor
eliminator
elisor also eslisor
elucidator
elutriator (American English) also elutor (British English)
emanator
emancipator
emasculator
embassador (Archaic) same as ambassador
embraceor or embracer (American English) or embrasor (British English)
emendator
emigrator (Rare) same as emigrant (as a noun)
emperor
emptor
emulator
emulsor
enactor
endorsor or endorser
enervator
enumerator
enunciator
epilator
epitomator also epitomist
equator
equilibrator
equivocator
eradicator
erector or erecter
error
escalator also an adjective
escheator
eslisor same as elisor
estimator
evacuator
evaluator
evaporator
evertor
evictor
eviscerator
evocator
exactor or exacter
exaggerator
examinator (Rare) also examiner
excavator
exceptor
excerptor or excerpter
excheator (Obsolete) same as escheator
excitator
excitor
excogitator
excommunicator
excusator (Obsolete) also apologist
execrator
executor
exfoliator also exfoliant
exhibitor or exhibiter also exhibitant
exhilarator
exonerator
expandor or expander
expatiator
expectorator
expeditor or expediter
expenitor
experimentator also experimentor, experimenter
experimentor or experimenter also experimentator
expiator
expilator (Obsolete) also plunderer, pillager
explicator
explorator
expositor
expostulator
expressor or expresser
expromissor (British English)
expropriator
expurgator
exsiccator
extensor
extenuator
exterminator
exteroceptor
extirpator
extractor
extrapolator
extructor (Obsolete) same as builder
fabricator
fabulator
factor
faitor or faitour
falsificator also falsifier
fascinator
fautor (Obsolete) also favorer, abettor
federator
felicitator
fellator
feoffor or feoffer
fermentor or fermenter
fetor (American English) or foetor (British English)
fictor (Rare)
fidejussor also guarantor
flagellator
flector same as flexor
flexor
flocculator
foetor (British English) or fetor (American English)
formulator
fornicator
fossor also called fossarian
fractionator
franchisor or franchiser
fulminator
fumigator
funambulator
functor
gator or gater or ‘gater (Southern US, Informal) same as alligator
generator
genitor
genuflector
germinator
gesticulator
gimmor
gladiator
glossator
governor
graduator
grantor
granulator or granulater
guarantor
gubernator also governor
guilor (Obsolete) also deceiver
guvnor (British English, Informal) also guv
gyrator
habilitator
habitator (Obsolete) same as inhabitant
hallucinator
hector also a verb
heldentenor also called heroic tenor
heritor also inheritor
hesitator or hesitater
hibernator
horror also an adjective
horticultor also horticulturist
humidor
humiliator
huzoor
hydrator
hydroextractor
hydrometeor
hygristor
hyperreactor
hypothecator
ideomotor (this word is an adjective only)
idolator or idolater
ignitor or igniter
illuminator
illustrator
imitator
immigrator
immolator
immunomodulator
immunopotentiator
immunosuppressor (noun) also immunosuppressive (noun, adjective)
impactor or impacter
impanator
impellor or impeller
imperator
impersonator
impetrator
implementor or implementer
implorator (Obsolete) same as implorer
importunator (Obsolete) same as importuner
impostor or imposter
imprecator
impregnator
impressor
impropriator
improvisator also improviser
improvisor or improviser
impulsor (Rare) also inciter
inaugurator
incantator
incapacitator
incarcerator
incensor also inciter
inceptor
incinerator
incisor
incorporator
incriminator
incubator
inculcator
indagator
indemnificator also indemnifier
indemnitor
indentor or indenter
indicator
indictor or indicter
individuator
indoctrinator
indorsor or indorser same as endorsor or endorser
inductor
infector or infecter
inferior also an adjective
infiltrator
inflator or inflater
inflector
inflictor or inflicter
infractor
inhalator also nebuliser (British English) or nebulizer (American English)
inheritor also heir
inhibitor or inhibiter
initiator
injector
innovator
inoculator
inquisitor
insectator (Obsolete) also persecutor, censurer
inseminator
insessor
insidiator (Obsolete) also ambusher
insinuator
inspector
inspirator also called injector
inspissator
instaurator
instigator also instigant
instilllator
institutor or instituter
instructor
insufflator
insulator
integrator
interceptor or intercepter
intercessor
intercommunicator
interconnector
interdictor
interjector
interlocutor
intermediator
intermittor or intermitter
interoceptor
interpellator
interpolator or interpolater
interrogator
interruptor or interrupter
intervenor or intervener
interventor also intervener
intimidator
intonator also monochord
intoxicator
introductor (Obsolete) also introducer
inundator
invalidator
inventor or inventer
invertor (1) (Anatomy)
invertor (2) or inverter (Electricity)
investigator
investor
invigilator
invigorator
invitor or inviter
invocator
irradiator
irrigator
irritator
isolator
jaculator
jailor or jailer (American English) also gaoler (British English)
janitor also a verb
jeistiecor (Scottish English, Obsolete)
joculator (Obsolete) also jester, joker
judicator
jurator also juror, compurgator
juror
justificator also justifier
kurveyor (South African English, Archaic)
labrador also labrador retriever
lachrymator or lacrimator
laminator
laudator also lauder
laxator
lector
legator
legislator
legitimator also legitimiser (British English) or legitimizer (American English)
lessor
levator
levigator
levitator
liberator
licensor (Law) or licenser
lictor
lienor also lienholder also lienee (Australian English)
ligator
liquidator
literator also litterateur or littérateur
lithotriptor or lithotripter also written lithontriptor
litigator
locator or locater
locomotor also an adjective
lubricator
lucubrator
macerator or macerater
machinator
magnetomotor (Rare)
maintainor (Law)
malaxator (Rare)
malefactor
mandator
manductor
manipulator
manumotor
maormor (Obsolete) same as mormaor
masticador or mastigador
masticator
mastigador or masticador
masturbator
matador
matriculator
mayor
mechanoreceptor
mediator
medicator
meliorator also ameliorator
mentor
meteor
methylator
microdetector
micromanipulator
microprocessor
microprojector
microsensor
migrator
milor (British English, Obsolete) apparent shortened version of milord
minicalculator
mirador
mirror
miscalculator
miscegenator
miscreator
misfeasor
misgovernor
mistutor (this word is a verb only)
mitigator
moderator
modificator also modifier
modulator
monitor
monochromator also called monochromatic illuminator
mormaor (British, Scottish English)
mortgageor (Law)
mortgagor or mortgager
motivator
motor
multiauthor (this word is an adjective only)
multiconductor (this word is an adjective only)
multifactor (this word is an adjective only) also multifactorial
multiplexor or multiplexer
multiplicator also multiplier
multiprocessor
multivibrator
mutator also an adjective
mutilator
mystificator also mystifier
nagor also reedbuck
narrator or narrater
navigator
negator or negater
neglector or neglecter
negotiator
nervimotor (this word is an adjective only)
nestor
neurimotor (this word is an adjective only)
neuristor
neuromodulator
neuromotor (this word is an adjective only)
nitrator
nomenclator
nominator
nominor (Obsolete) same as nominator
nonactivator
nonactor
nonadaptor or nonadapter
nonadjustor or nonadjuster
nonauthor
nonbachelor
noncollector
noncompetitor
nonconductor
nonconspirator
noncontributor
noncooperator
noncreditor
nondebtor
nondefector
nondepositor
nondoctor
nonelector
nonfactor
nonheritor
noninsulator
nonintervenor or nonintervener
noninvestor
nonjuror
nonproprietor
nonreactor
nonreflector
nonsailor
nonsecretor
nonsurvivor
nonvector also an adjective
nonvibrator
novator (Obsolete) same as innovator
nucleator
nullificator also nullificationist
numerator
obfuscator
objector
objurgator
obligator
obligor
obliterator
oblocutor (Obsolete) also disputer, gainsayer
observator (Obsolete) also observer
obsessor
obstructor or obstructer
obturator
obviator
occlusor also an adjective
octuor also octet (American English) or octette (British English)
oculomotor (this word is an adjective only)
offeror or offerer
officiator
olfactor (Rare) also nose
operator
opinator (Obsolete) same as opinionator
opiniator or opiniatre (Obsolete) same as opinionator
opinionator (Obsolete)
oppositor (Obsolete) also opposer, opponent
oppressor
orator
orchestrator or orchestrater
ordinator (Rare) also director
orientator
originator
oscillator
ostentator
ovator
overcensor (this word is a verb only)
ovipositor

oxidator (Obsolete) same as oxidiser (British English) or oxidizer (American English)

oxygenator
ozonator
Ozonator™
pacificator also pacifier
palliator
palpator
paradoctor
parador
paritor same as apparitor
parlor
participator
passivator
pastor also a verb
patentor
pavior (American English) or paviour (British English)
pavisor
pawnor or pawner
payor or payer
peculator
pegador also remorar
penetrator
perambulator
percolator
percussor also plexor, plessor (Medicine)
peregrinator
perfector or perfecter
perfervor (American English) or perfervour (British English)
perforator
permulator
pernor
perpetrator
perpetuator
perquisitor (British English)
persecutor
perseverator (British English)
personator
perturbator also perturber
petitor (Obsolete)
phonomotor
phonoreceptor
photoconductor
photodetector
photoreceptor
phototransistor
picador
piscator also fisherman
plasmator (Rare) also fashioner, former
pledgeor or pledgor or pledger
plessor same as plexor
plexor also plessor, percussor
pollinator
pollinctor
polyhistor also polyhistorian
pontificator
populator
possessor
postillator
postulator
potator (Rare) also drinker
potentiator
praelector (British English) or prelector (American English)

praepostor (British English) or prepostor (American English) also praepositor (Br Eng) or prepositor (Am Eng)

praetor (British English) or pretor (American English)
preadministrator
prebachelor also an adjective
precensor (this word is a verb only)
precentor
preceptor
precessor (Obsolete) same as predecessor
precipitator
precollector
preconductor
preconspirator
precorridor
precounsellor (British English)
precreditor
precursor
predator
predebtor
predecessor
predestinator
predicator
predictor
predirector
predominator
predonor
preeditor
preeliminator
preemperor
preemtor also preemptor
preevaporator
prefabricator
preguarantor
preinspector
preinvestigator
prelector (American English) or praelector (British English)
premeditator
premonitor
premonstrator (Rare)
preoperator
preparator
prehensor
prepositor (American English) or praepositor (British English) also prepostor (Am Eng) or praepostor (Br Eng)

prepossessor

prepostor (American English) or praepostor (Britsh English) also prepositor (Am Eng) or praepositor (Br Eng)

preprocessor
preselector
preseparator
pressor (this word is an adjective only)
pressoreceptor same as baroceptor or baroreceptor
prestidigitator
prestigiator (Obsolete) same as prestidigitator
presultor (Rare)
presupervisor
pretor (American English) or praetor (British English)
prevaricator
previsitor
previsor
primogenitor
prior also an adjective
proauthor (this word is an adjective only)
probator
processor or processer
procrastinator
procreator
proctor
procurator
proditor (Obsolete) same as traitor
professor
progenitor
prognosticator
prohibitor or prohibiter
proitor (Obsolete) same as traitor
projector
prolocutor
promisor (American English)) or promissor (British English)
promotor [fidei] also devil’s advocate
promulgator
pronator
pronunciator also pronouncer
propagator
propellor or propeller
propitiator
propraetor (British English) or propretor (American English)
proprietor
proprioceptor
proproctor
propulsor (British English) also propeller (American English)
prorector
prosector
prosecutor
prospector
prostitutor
prostrator
protector
protestator also protester
protestor or protester
protractor
provedor or providor also provedore same as proveditor
proveditor (British English) also purveyor
provisor
provocator same as provocateur
psychomotor (this word is an adjective only)
Pulmotor™
pulsator
punctator
punctuator
purificator also purifier
purveyor
pyrolator (Rare) also fire worshiper
quaestor (British English) or questor (American English)
qualificator
quatuor also quartet (American English) or quartette (British English)
questor (American English) or quaestor (British English)
radiator
radioconductor
raptor
ratiocinator
razor
reactor
realtor
recapitulator
recaptor
receiptor
recensor (this word is a verb only)
receptor
reciprocator
recognitor
recognisor (British English) or recognizor (American English)
reconciliator also reconciler
reconstructor or reconstructer
recoveror
recreator
recriminator
rectificator also rectifier
rector
recuperator
recusator (Scottish English, Law)
redactor
redecorator
redefector
redisseisor (British English) or redisseizor (American English)
redressor or redresser
reductor
reflector
refractor
refrigerator also fridge (Informal)
regenerator
regidor
regrator
regressor
regulator
rehabilitator
reinstator
reinvigorator
reiterator
rejector or rejecter
rejoneador
rejuvenator
relator
releasor
relessor same as releasor
remittor or remitter
remonstrator
remunerator
renegotiator
renovator
repatriator
repetitor
replicator
repositor
repossessor
representor (Obsolete) same as representative (as a noun)
repressor (1) (Genetics)
repressor (2) or represser
reprobator (1) or reprobater
reprobator (2) (Scottish English, Law)
reproductor also reproducer
repudiator
requestor
requisitor
rescussor (Archaic)
reservor or reserver
resistor
resonator
respirator
responsor or responser
restitutor (Rare)
restorator
resurrector
resuscitator
retailor (Obsolete) same as retailer
retaliator
retentor
retractor
retributor
retroreflector
revelator
reverberator
revisor or reviser
revivor
rheomotor (Rare)
rhetor (Obsolete) also rhetorician
rizzor (Scottish English - this word is a verb only)
rodomontador also rodomontadist
roncador
rotator
Rotavator™ or Rotovator™
rotor
rubricator
ruminator
rusticator
sacrificator (Rare) also sacrificer
sailor
salivator
salvor or salver
samlor
sartor (Humorous) also tailor
saturator (1) (Chemistry)
saturator (2) or saturater
savior (American English) or saviour (British English)
scarificator
scintillator
scissor also a verb
scrutator
sculptor
secretor
sectator (Obsolete) also follower, disciple
sector
seductor (Obsolete) also seducer
segregator
seignior
seisor (British English) or seizor (American English)
selector
self-director
self-impregnator
self-instructor
self-operator
self-oppressor
self-survivor
self-vivisector
semiconductor
senator
sensor
sensorimotor also sensomotor (both words are adjectives only)
separator
septuor also septet (American English) or septette (British English)
sequestrator

sermocinator (Obsolete) same as sermoniser (British English) or sermonizer (American English)

serrator
servitor
servomotor
sestuor also sestet
settlor (Law)
sextuor also sextet
sibilator
significator
silvicultor or sylvicultor also silviculturist or sylviculturist
simplificator also simplifier
simulator
solicitor
somnambulator
sophisticator
spectator
speculator
spoliator
sponsor
stabilisator (British English) or stabilizator (American English)
stannator (British English)
stator
stellarator
stentor
sternutator
stimulator or stimulater
stipulator
stressor
stridulator
subadministrator
subauditor
subcantor
subcollector
subconservator
subcontractor
subcurator
subdirector
subdistributor
subdoctor
subeditor
subescheator
subexecutor
subfactor
subgovernor
subinspector
subintercessor
subjugator
sublessor
subordinator same as subordinating conjunction, subordinate conjunction
subpastor
subprior
subproctor
subprofessor
subprotector
subrector
subsector
substantiator
substractor (Obsolete) same as subtractor
subtractor
subtutor
succentor
successor
suffragator (Obsolete)
suitor
sulfurator or sulphurator
superadministrator
superauditor
supercommentator
superconductor
superdoctor
supererogator
superstructor (Rare)
supervisor
supinator
supplicator also supplicant (as a noun)
suppositor
suppressor or suppresser
supravisor (Obsolete) same as supervisor
surrenderor
surveyor
survivor
susceptor
suspensor
sylvicultor or silvicultor also sylviculturist or silviculturist
syncopator
syndicator
tabulator
tactoreceptor
tailor
tauridor (Rare) same as toreador, bullfighter
taxor or taxer
telecommunicator
telemotor
televisor
temblor
tenor also an adjective
tensor
tergiversator also tergiversant
terminator
termor
terror
testator
testificator also testifier
tetanomotor
thermistor
thermomotor
thermoreceptor
thermoregulator
thrustor or thruster
thyristor
titillator
titivator or tittivator
titrator
tolerator
tonsor (Rare) same as barber
toreador also bullfighter
tormentor or tormenter
tortfeasor or tort-feasor

totalisator (British English) or totalizator (American English) also totaliser (Br Eng) or totalizer (Am Eng)

tractator (Rare) also Tractarian (as a noun)
tractor
traditor
trafficator (British English) also turn signal (American English)
traitor
transactor
transductor also transducer
transferor or transferrer
transgressor
transilluminator
transistor also an adjective
translator (1) (Television)
translator (2) or translater
transliterator
transmigrator
transpondor or transponder
transubstantiator
travelator or travolator
tremor
triangulator
trimotor
trior (Law) or trier
trisector
triturator
tronator (Obsolete)
trustor (Law)
tubulator
turbogenerator
turbulator
tuscor also tush (of a horse)
tutor
twistor (Rare) also an adjective
unanchor (this word is a verb only)
underactor
underchancellor
underchantor
undercollector
underdistributor
underdoctor
underfactor
undergovernor
underjanitor
undermediator
underpossessor
undertutor
unpastor (Rare - this word is a verb only)
unrelentor (Poetry)
unvisor (British English - this word is a verb only)
urinator
utilidor (Canadian English)
vaccinator
vacillator
vagodepressor also an adjective
valuator
valvasor or valvassor variant of vavasor
varactor
variegator
variolator
varistor
vasoconstrictor
vasodepressor
vasodilator
vasoinhibitor
vasomotor
vasopressor same as vasodilator
vaticinator

vavasor (American English) or vavasour (British English) also written vavassor

vector
velociraptor
venator (British English) also hunter
vendor or vender
venerator
ventilator
verderor or verderer
versificator (Rare) also versifier
versor
viator (Rare) also traveler (American English) or traveller (British English)
vibrator
victor
vindicator
vinificator
violator or violater
visceromotor (this word is an adjective)
visitator also offical visitor
visitor
visor or vizor
visuomotor (this word is an adjective)
vitiator
vituperator
vivisector also vivisectionist
vizor or visor
vociferator
volador also called volator
warrantor or warranter
warrior
wastor or wastour (Obsolete, Rare) same as waster, thief
weldor or welder
zelator