Here's what rhymes with goudronneux.
no know mo mow noe so go though low show co snow row tho fo foe ho lo bo doe dough po ro toe wo woe tow yo beau ceux faut goe hoe jo ko sew soe uno vo beaux cho dau roe sho yeux zo rho whoa doh schmo schmoe although ago flow blow grow slow throw pro glow plateau quo audio fro crow thro bio nouveau propos cameo floe tuo bro dunno plateaux stow throe trousseau trow chapeau sloe foreknow bandeau kayo chapeaux trousseaux borzoi romeo resew below ratio radio undergo bestow chateau hello patio dynamo forego forgo polio tableau aglow aliquot apropos dicho domino rodeo tableaux topos chateaux kapok oleo tarot turbot undertow deathblow regrow gateau matzoh fatso gateaux pekoe tallyho embryo studio buffalo folio indigo portico stereo bungalow calico vertigo escrow medico outgrow siglo spatio oregano adagio piccolo pompano overthrow overflow politico mistletoe presidio afterglow pianissimo pistachio overgrow microdot portfolio archipelago impresario braggadocio mustachio moustachio generalissimo