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