Antonyms for "comported oneself" could include words like misbehaved, acted out, disobeyed, rebelled, or disregarded expectations. These words imply a lack of respect for authority or social norms, and suggest a disregard for the consequences of one's actions. In contrast, "comported oneself" suggests a level of self-control and adherence to social conventions, indicating a willingness to comply with rules and expectations. While antonyms may connote negative behavior, the use of the term "comported oneself" implies a standard of behavior that is expected and respected, and implies a level of self-awareness and responsibility in one's actions.