Bail out Definition 1 of 4Pro Tip 1/3Negative Implication Often implies leaving hastily or avoiding a problem. She bailed out as soon as the argument started. Pro Tip 2/3Informal Usage Used informally, especially in conversations. I'm bailing out of this road trip, sorry guys. Pro Tip 3/3Sudden Decision Indicates a quick, often unplanned decision to leave. Due to the scandal, the director bailed out overnight.