underachiever /ˌʌndɚrəˈtʃiːvɚ/ noun plural underachievers
plural underachievers
Learner's definition of UNDERACHIEVER
[count]
: someone (such as a student or athlete) who does not perform as well or work as hard as he or she can未充分发挥潜能的人 — opposite overachiever — underachieve
/ˌʌndɚrəˈtʃiːv/ verb underachieves; underachieved; underachieving [no object] — underachievement
/ˌʌndɚrəˈtʃiːv/ noun [noncount]