Here's what rhymes with carboxyl.
fill hill sill ville fil fille vill shill will still till bill kill skill mill chill thrill mil nil pill shrill spill til ftill gill grill quill chil grille mille quelle rill wil wilh dill frill krill swill drill fulfill anil downhill nihil uphill benzyl trill twill dunghill gerbil brill pigswill until goodwill hydroxyl instill instil untill distil distill freewill overkill overfill neutrophil quadrille daffodil deshabille dishabille overspill watermill roadkill fiberfill espadrille eosinophil Words that almost rhyme with carboxyl
fear shear sheer feare veer vere vir sear sere year clear near dear mere career sphere beer rear deer gear peer cheer pier queer spear steer smear cashier mir sneer cohere leer yeare jeer cushier appear severe adhere austere revere veneer auctioneer biosphere inhere servir amir emir tapir vizir blear besmear leafier bawdier cafetiere pioneer sincere premier unclear premiere cavalier persevere lithosphere troposphere domineer gazetteer compeer killdeer thornier rainier brainier grainier hornier cornier downier atmosphere disappear frontier interfere reappear brigadier souvenir chevalier privateer bombardier gondolier hydrosphere profiteer mesosphere racketeer triumvir balladeer chanticleer exosphere marketeer bathysphere lavalier junketeer runtier engineer hemisphere volunteer financier insincere chandelier charioteer stratosphere acyclovir pamphleteer yesteryear commandeer muleteer bandolier mutineer bandoleer electioneer fusileer mountaineer scrutineer conventioneer