Here's what rhymes with xlthough.
so though o show au tho fo foe ho oh owe aux ceux eau faut hoe ow sew soe vo eux oe 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 beaux cho dau floe mow noe roe yeux rho stow throe sloe whoa doh borzoi schmo resew schmoe ago ratio blow grow pro glow quo chateau crow folio hello bio forego forgo nouveau uno tuo bro chateaux trousseau trow chapeau oleo foreknow kayo chapeaux fatso trousseaux below radio overthrow plateau audio bestow overflow stereo calico polio propos aglow aliquot cameo dicho escrow rodeo siglo topos dunno plateaux kapok tarot turbot deathblow regrow gateau matzoh gateaux pekoe romeo tallyho embryo studio buffalo patio tableau vertigo apropos mistletoe outgrow spatio tableaux adagio overgrow bandeau undergo indigo portico dynamo domino medico presidio afterglow oregano piccolo pistachio undertow mustachio microdot moustachio portfolio bungalow politico pompano archipelago impresario braggadocio pianissimo generalissimo