"Minded p's and q's" is an idiomatic expression that means to be careful about one's behavior, speech, and manners. The antonyms for this phrase can be reckless, thoughtless, careless, inconsiderate, impolite, uncivil, and impulsive. These words suggest a lack of consideration for one's surroundings, a disregard for social norms, and a tendency to act without thinking about the consequences. People who are not "minding their p's and q's" are likely to offend others, make social mistakes, and create awkward situations. On the other hand, those who are mindful of their behavior are likely to be respected, appreciated, and valued in their personal and professional lives.