Wacka Share definition Flag Another word for 'good' "sick" or "bad".. in a positive way. For Example: "That Drink Was Wacka Lets Have Another" Pronounced: Wack-ah Wacka by Badda Bing April 5, 2007 0 0 Get merch Get the Wacka mug. Buy Now — $32.95 See more merch