Bratty/ˈbræti/ Definition 1 of 1Pro Tip 1/3Negative Connotation Describes disapproval; used to criticize someone's behavior, especially a child's. The bratty kid threw a tantrum when he couldn't get the toy. Pro Tip 2/3Informality Usage Used in casual conversation; not appropriate for formal or academic context. I hope my nephews don't act bratty at the family dinner. Pro Tip 3/3Demeanor Indicator Implies a repeated behavior pattern rather than a one-time event. She's known for her bratty attitude when she doesn't win a game.