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