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