underachiever
/ˌʌndərəˈtʃivər/
noun
- A person who performs less well than expected, especially in school or work.
- Many underachievers simply need a different learning environment to succeed.
- He was labeled an underachiever because his test scores were far below his potential.
- The teacher tried to motivate the underachiever by giving him extra attention.
Antonyms