Here's what rhymes with diphtong.
dong pong tong bong long wrong song gong prong thong twang dingdong along strong belong throng ftrong sarong erelong mahjong prolong singsong yearlong nightlong lifelong livelong Words that almost rhyme with diphtong
don dawn bomb palm bom balm bon pawn tom bonne dom pom john upon non drawn gone com von calm con lawn mom yon homme hon vom wan baton fawn han nom rom schon som spawn yawn khan mam prom sawn sonne vpon brawn prawn embalm faun iamb gnawn quam swan yuan exon npon operon suam aplomb begone pecan tenon predawn qualm autobahn becalm outdrawn withdrawn thereon salon whereon fagon intercom redrawn chaperon chiffon pogrom aileron hereon salaam heptagon lasagne firebomb undergone thereupon whereupon polygon automaton denouement foregone pantheon positron echelon octagon paragon forgone hereupon overdrawn pentagon amazon antiphon epsilon mastodon tarragon woebegone consomme leprechaun neocon trimaran upsilon supermom methadon marathon cardamom carillon cordovan emoticon frogspawn lexicon rapprochement hexagon phenomenon pantechnicon