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