Here's what rhymes with songneux.
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 foreknow schmo schmoe although ago flow blow grow slow throw pro glow quo audio fro crow folio thro bio forego forgo nouveau domino floe tuo bro dunno stow throe trow oleo sloe kayo romeo below chateau hello dynamo polio aglow cameo dicho rodeo siglo topos chateaux chapeau kapok tarot turbot bandeau gateau matzoh pompano chapeaux fatso gateaux pekoe borzoi resew ratio radio embryo overthrow plateau studio undergo bestow overflow indigo patio stereo propos tableau vertigo aliquot escrow medico outgrow spatio tableaux oregano plateaux trousseau adagio undertow deathblow overgrow regrow trousseaux buffalo portico bungalow calico apropos mistletoe afterglow piccolo microdot tallyho portfolio presidio pianissimo pistachio mustachio moustachio politico impresario archipelago braggadocio generalissimo