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