BA suggests bad butt, prounouced as B.A. Bad-Ass, cool, awesome, amazing, wicked, sweet Bad AssBeing of a wonderful stateA Hard-Core individual Always describe an individual who is a poor butt. It may describe acting like a bad ass. Another great way to state, "Bas butt". The abriviation associated with term "Bad ass" used by young children and sons and daughters afraid of there moms and dads to exclaim excitment. BA- brief for Bad Ass;(noun) a negative ass, some which looks cool in a sense of standing from going contrary to the beliefs of other people;(adj.) to-be a rebel, bad butt;(verb) to accomplish something in connection of being a bad butt, rebel.