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