Wizo Share definition Flag a person who is extremely dumb, cant game, and is very spontaneously and frequently making stupid decisionsShortened as: Wiz Wow! you are such a wizo that was so stupid of you!Shortened: Ya dumb wiz! Wizo by wizosknowme April 24, 2011 0 0 Get merch Get the Wizo mug. Buy Now — $32.95 See more merch