Over-zealous refers to someone who is excessively enthusiastic or passionate about something. Some synonyms for over-zealous are overly enthusiastic, fanatical, fervent, obsessive, extreme, exaggerated, and intense. These words all describe an individual who displays excessive zeal for a cause or activity. Some other synonyms for over-zealous are hyperactive, overactive, over-enthusiastic, and exuberant. These words show that the person is energetic and active but may go beyond the acceptable limits. It's essential to balance enthusiasm and passion with temperance and moderation to avoid coming across as over-zealous. Synonyms for over-zealous are helpful in expressing the intensity and enthusiasm of a person without making them appear excessive.