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