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