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