Oofity Share definition Flag Oofity is a word you use when something goes wrong but it's funny you would only use the word if you are talking to a friend. "I accidentally ate the last cookie!" Then you say back to your friend, "Oofity!" Oofity by AmazingWordsTodayKids January 10, 2020 0 0 Get merch Get the Oofity mug. Buy Now — $32.95 See more merch