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