noun Date: 1952 one (as a student) that fails to attain a predicted level of achievement or does not do as well as expected, underachieve intransitive verb underachievement noun
UNDERACHIEVER
Meaning of UNDERACHIEVER in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012