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