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