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