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marathon chaperon overdrawn amazon antiphon epsilon mastodon carillon heptagon cordovan upsilon methadon phenomenon withdrawn thereupon whereupon lexicon positron hereupon leprechaun frogspawn rapprochement pantechnicon Words that almost rhyme with synodicon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