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