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