Here's what rhymes with colloidaux.
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 radio slow snow throw glow quo audio fro crow thro polio uno dicho floe rodeo dunno stow throe oleo sloe tarot turbot kayo pekoe borzoi schmo schmoe ratio plateau bestow chateau folio hello patio forego forgo nouveau propos tableau aglow domino outgrow tableaux chateaux plateaux trousseau adagio chapeau kapok deathblow foreknow regrow bandeau gateau matzoh chapeaux fatso gateaux trousseaux romeo resew embryo overthrow studio undergo buffalo overflow indigo portico stereo calico dynamo politico vertigo aliquot apropos cameo escrow medico siglo spatio piccolo undertow overgrow pompano tallyho bungalow presidio afterglow oregano portfolio mistletoe braggadocio pistachio mustachio microdot moustachio archipelago impresario pianissimo generalissimo