Here's what rhymes with appater.
pater dater tater later traitor waiter cater debater hater rater gator prater gaiter greater operator crater agitator freighter imitator obturator rotator straighter skater grater annotator collator gyrator sedater generator creator elevator equator mediator oscillator dictator educator alligator moderator originator radiator aviator decorator innovator levator violator animator idolater headwaiter dumbwaiter adulator inhalator corroborator indicator commentator activator collaborator curator incubator insulator modulator navigator perpetrator actuator alternator applicator carburetor evaporator illustrator respirator escalator gladiator adjudicator detonator emulator percolator cooperator pollinator dedicator litigator nominator renovator hibernator crocheter abrogator refrigerator translator arbitrator legislator regulator accelerator facilitator negotiator simulator ventilator instigator integrator procurator excavator liquidator fabricator appropriator duplicator eliminator fornicator lubricator vindicator dehydrator resuscitator castigator decelerator defoliator eradicator exaggerator fumigator mutilator peculator decapitator denominator coordinator calculator speculator evaluator manipulator stimulator demonstrator incinerator interrogator conciliator formulator consolidator infiltrator repudiator contaminator administrator investigator accumulator communicator defibrillator exterminator prevaricator dissimulator insinuator discriminator procrastinator prognosticator expropriator Words that almost rhyme with appater
paper taper pager tabor nature major labor neighbor vapor trader sabre wager nadir saber caper draper raider wader raper staider wagerer grader belabor denature evader invader scraper persuader blockader crusader legislature masquerader nomenclature painter tailor baker taker baser jailer payer chaser tamer bather jailor pacer taster baler chaster baster urbaner danger chamber favor favour layer player laser maker mayor safer sailor breaker planar razor tracer trailer trainer wafer waiver fainter savor savour seiner appraiser attainder braver changer hacer maner papier plainer raiser saver shaker spacer waver blazer gainer gayer maser planer racer saner vaguer whaler mailer shaver waster assayer faker gamer hazer bracer drainer stayer vainer caver fayer lamer raver sager staler caner haler opaquer wailer fainer failure container flavor flavour glacier labourer scalar surveyor graver manger retainer savior bilayer purveyor ranger slayer strainer arranger campaigner eraser partaker slaver sprayer framer grayer modeller quaver abstainer frailer greyer poetaster statelier cockchafer defamer essayer grazer quainter claimer delayer defacer loudhailer wavier inaner unsafer behavior stranger endanger conveyor disfavor disfavour entertainer undertaker betrayer inhaler conveyer gamester complainer declaimer automaker naysayer saltshaker doomsayer astuter finagler waylayer insaner remainder engraver exchanger disclaimer multilayer soothsayer boilermaker humaner moneymaker restrainer programer gainsayer boneshaker monolayer troublemaker multiplayer semiquaver semitrailer misbehavior cabinetmaker policymaker photoengraver