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chiffon aileron amazon antiphon hereon predawn tarragon autobahn lasagne neocon trimaran upsilon outdrawn phenomenon withdrawn automaton foregone echelon marathon paragon forgone overdrawn pentagon epsilon mastodon woebegone leprechaun emoticon methadon thereupon whereupon lexicon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