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yuan exon brawn prawn thereon salon baton foregone begone chaperon chiffon forgone pecan tenon aileron hereon lasagne withdrawn thereupon whereupon echelon hexagon octagon redrawn hereupon overdrawn amazon predawn woebegone autobahn carillon neocon frogspawn outdrawn undergone lexicon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