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