Here's what rhymes with octagon.
gone con khan pecan upon don non von dawn undergone lawn yon hon wan baton bon fawn han pawn schon yawn bonne sawn sonne vpon begone faun john gnawn drawn salon spawn swan yuan exon fagon paragon brawn prawn tenon antiphon hereon tarragon lasagne thereon polygon foregone whereon echelon hexagon chiffon forgone aileron amazon epsilon mastodon predawn woebegone autobahn carillon neocon upsilon emoticon outdrawn thereupon whereupon lexicon automaton denouement pantheon positron marathon redrawn chaperon hereupon overdrawn pentagon heptagon cordovan trimaran methadon withdrawn leprechaun frogspawn phenomenon rapprochement pantechnicon Words that almost rhyme with octagon
com calm gong long along wrong song bomb palm mom quam bom homme vom balm nom rom som tom dong mam thong pogrom pom pong tong bong qualm iamb becalm belong prolong throng intercom prom prong aplomb twang salaam sarong erelong strong embalm consomme mahjong firebomb dingdong supermom lifelong cardamom singsong yearlong nightlong livelong corn born borne torn worn barn horn warn scorn yarn adorn morn mourn thorn shorn darn porn tarn lorn sworn forlorn unborn peppercorn unworn reborn outworn waterborne careworn forborne timeworn lowborn firstborn stillborn unicorn forewarn lovelorn sweetcorn forsworn foresworn