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