overachievement
Definitions
The act or state of performing better or achieving more than is expected or required.
The tendency to strive for success beyond one's actual abilities or the standards set by others.
Examples
His constant overachievement at work eventually led to a severe case of burnout.
The student's pattern of overachievement was driven by a deep-seated need for academic validation.
Synonyms
exceptional performance surpassing expectations high attainment superior results outstanding success
Antonyms
underachievement falling short subpar performance failure to meet standards mediocrity