underachiever
🇺🇸
/ˌʌndərəˈtʃiːvər/
🇬🇧
/ˌʌndərəˈtʃiːvə(r)/
Someone who doesn't do as well as they should or could, often in school.
Despite his high IQ, he was considered an underachiever because he rarely studied.
尽管他的智商很高,但因为他很少学习,他被认为是一个未充分发挥潜力的人。