Antonyms for the phrase "comport oneself" include behave badly, misbehave, act improperly, act inappropriately, violate norms, breach decorum and act disrespectfully. These terms describe actions that are seen as unfitting for certain social settings or that cause disruption and discomfort to others. To display any of these behaviours is to act in contrast to the expected conduct characterized by composure and dignity. When someone fails to comport themselves accordingly, it can lead to consequences like loss of credibility or reputation, diminished social standing, or even legal repercussions. Therefore, it is essential to know the exact opposite of this phrase so that we can avoid these negative actions and maintain a principled, courteous approach towards others.