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