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