aggrandize
agonize
analyze
anatomize
anglicize
apologize
apostrophize
apprize (to value)
authorize
baptize
brutalize
canonize
catechize
catholicize
cauterize
centralize
characterize
christianize
civilize
colonize
criticize
crystallize
demoralize
dogmatize
economize
emphasize
epitomize
equalize
eulogize
evangelize
extemporize
familiarize
fertilize
fossilize
fraternize
galvanize
generalize
gormandize
harmonize
immortalize
italicize
jeopardize
legalize
liberalize
localize
magnetize
memorialize
mesmerize
metamorphize
methodize
minimize
modernize
monopolize
moralize
nationalize
naturalize
neutralize
organize
ostracize
paralyze
particularize
pasteurize
patronize
philosophize
plagiarize
pulverize
realize
recognize
reorganize
revolutionize
satirize
scandalize
scrutinize
signalize
solemnize
soliloquize
specialize
spiritualize
standardize
stigmatize
subsidize
summarize
syllogize
symbolize
sympathize
tantalize
temporize
tranquilize
tyrannize
universalize
utilize
vaporize
vitalize
vocalize
vulcanize
vulgarize
II
Use the termination -ible in the following words:
accessible
admissible
appetible
apprehensible
audible
cessible
coercible
compatible
competible
comprehensible
compressible
conceptible
contemptible
contractible
controvertible
convertible
convincible
corrigible
corrosible
corruptible
credible
decoctible
deducible
defeasible
defensible
descendible
destructible
digestible
discernible
distensible
divisible
docible
edible
effectible
eligible
eludible
enforcible
evincible
expansible
expressible
extendible
extensible
fallible
feasible
fencible
flexible
forcible
frangible
fusible
gullible
horrible
illegible
immiscible
impassible
intelligible
irascible
legible
miscible
negligible
partible
passible (susceptible)
perceptible
permissible
persuasible
pervertible
plausible
possible
producible
reducible
reflexible
refrangible
remissible
reprehensible
resistible
responsible
reversible
revertible
risible
seducible
sensible
tangible
terrible
transmissible
visible
In all other cases use -able.
III
The following nouns end in -er.
abetter
abstracter
accepter
adapter
adviser
affirmer
aider
almoner
annoyer
arbiter
assenter
asserter
bailer
caster
censer (vessel)
concocter
condenser
conferrer
conjurer
consulter
continuer
contradicter
contriver
convener
conveyer
corrupter
covenanter
debater
defender
deliberater
deserter
desolater
deviser
discontinuer
disturber
entreater
exalter
exasperater
exciter
executer (except in law)
expecter
frequenter
granter
idolater
imposer
impugner
incenser
inflicter
insulter
interceder
interpreter
interrupter
inviter
jailer
lamenter
mortgager (except in law)
obliger
obstructer
obtruder
perfecter
perjurer
preventer
probationer
propeller
protester
recognizer
regrater
relater
respecter
sailer (ship)
sorcerer
suggester
supplanter
upholder
vender
The following nouns end in -or.
abbreviator
abductor
abettor (law)
abominator
abrogator
accelerator
acceptor
accommodator
accumulator
actor
adjudicator
adjutor
administrator
admonitor
adulator
adulterator
aggregator
aggressor
agitator
amalgamator
animator
annotator
antecessor
apparitor
appreciator
arbitrator
assassinator
assessor
benefactor
bettor
calculator
calumniator
captor
castor (oil)
censor
coadjutor
collector
competitor
compositor
conductor
confessor
conqueror
conservator
consignor
conspirator
constrictor
constructor
contaminator
contemplator
continuator
contractor
contributor
corrector
councillor
counsellor
covenantor (law)
creator
creditor
cultivator
cunctator
debtor
decorator
delator (law)
denominator
denunciator
depredator
depressor
deteriorator
detractor
dictator
dilator
director
dissector
disseizor
disseminator
distributor
divisor
dominator
donor
effector
elector
elevator
elucidator
emulator
enactor
equivocator
escheator
estimator
exactor
excavator
exceptor
executor (law)
exhibitor
explorator
expositor
expostulator
extensor
extirpator
extractor
fabricator
factor
flexor
fornicator
fumigator
generator
gladiator
governor
grantor (law)
habitator
imitator
impostor
impropriator
inaugurator
inceptor
incisor
inheritor
initiator
innovator
insinuator
institutor
instructor
interlocutor
interpolator
interrogator
inventor
investor
juror
lector
legator
legislator
lessor
mediator
modulator
monitor
mortgagor (law)
multiplicator
narrator
navigator
negotiator
nonjuror
numerator
objector
obligor (law)
observator
operator
originator
pacificator
participator
peculator
percolator
perforator
perpetrator
persecutor
perturbator
possessor
preceptor
precursor
predecessor
predictor
prevaricator
procrastinator
procreator
procurator
professor
progenitor
projector
prolocutor
promulgator
propagator
propitiator
proprietor
prosecutor
protector
protractor
purveyor
recognizor (law)
recriminator
reflector
regenerator
regulator
relator (law)
rotator
sacrificator
sailor (seaman)
scrutator
sculptor
sectator
selector
senator
separator
sequestrator
servitor
solicitor
spectator
spoliator
sponsor
successor
suitor
supervisor
suppressor
surveyor
survivor
testator
tormentor
traitor
transgressor
translator
valuator
vendor (law)
venerator
ventilator
vindicator
violator
visitor