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