Here's what rhymes with canonicatuum.
boom tomb doom whom room assume costume bloom womb broom loom plume zoom rheum abloom consume gloom groom fume flume subsume entomb resume perfume presume residuum suum legroom foredoom exhume elbowroom boxroom strongroom Words that almost rhyme with canonicatuum
tune boon doin dune attune soon moon noon spoon cartoon cocoon foon baboon coon prune loon rune goon shoon balloon hewn lagoon platoon saloon shewn strewn opportune toluene buffoon harpoon maroon pontoon raccoon swoon typhoon bassoon tycoon croon jejune lampoon doubloon patroon immune monsoon forenoon aucune dragoon impugn inopportune festoon importune spittoon racoon macaroon afternoon honeymoon picayune poltroon bestrewn tablespoon spermatozoon protozoon dessertspoon trinitrotoluene