The phrase "conducted oneself" refers to the way in which a person behaves and carries themselves in a particular situation. Antonyms for this phrase would include words like misbehaved, acted wildly, or conducted oneself poorly. These words describe a person's actions as being disruptive, inappropriate, or unacceptable in a given setting. Other antonyms could include words like disobeyed, neglected, or ignored, which suggest a lack of respect for rules or authority. In contrast, positive antonyms for "conducted oneself" would include words like behaved responsibly, acted with dignity, or conducted oneself admirably, which describe a person's actions as being appropriate and respectful in a given situation.