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