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