An "overachiever" is a person who performs better or achieves more success than expected, often exceeding the standards set for them. This term is commonly used in educational and professional contexts, where individuals may go above and beyond in their studies or work to attain high grades or promotions. Overachievers often set ambitious goals and work diligently to reach them, sometimes sacrificing leisure time or personal relationships. While their drive can lead to significant accomplishments, it may also result in stress or burnout if not managed properly.