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