baka Share definition Flag Japanese word "Baka" means idiot, fool and stupid, everything along those lines. every other definition people are using the sentences with english. Anata wa baka desu (You are an idiot/fool) Way to not mix languages noobs baka by Ben Ton July 6, 2005 0 0 Get merch Get the baka mug. Buy Now — $32.95 See more merch