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