underachiever

Word family  noun achievement achiever underachiever ≠ overachiever underachievement ≠ overachievement adjective achievable verb achieve underachieve ≠ overachieve

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++un·der·a·chiev·er /ˌʌndərəˈtʃiːvə $ -ər/ noun [countable]  GOOD ENOUGH#someone who does not do as well at school or at work as they could do if they worked harder 〔学习或工作上〕未充分发挥潜力者 —underachieve verb [intransitive] —underachievement noun [uncountable]

Examples from the Corpus

underachiever• There were moments when the 1. 8T Quattro behaved as an underachiever.• How do educators determine if a child is an underachiever?• Usually, he is shy, a loner, an underachiever who may feel dominated by his regular partner.• His presence goes a long way toward explaining why the Seahawks have gone from early-season underachievers to playoff contenders.• Unfortunately for our beloved Sean Elliott, the Spurs are notoriously soft underachievers come playoff time.

un·der·a·chiev·er nounChineseSyllable  

as who not well school at does someone Corpus do

underachiever
un‧der‧a‧chiev‧er /ˌʌndərəˈtʃiːvə $ -ər/ noun [countable]someone who does not do as well at school or at work as they could do if they worked harder
—underachieve verb [intransitive]
—underachievement noun [uncountable]