underachiever

== English == === Alternative forms === under-achiever === Etymology === From underachieve +‎ -er or under- +‎ achiever. === Pronunciation === === Noun === underachiever (plural underachievers) One who underachieves, i.e. performs less well than expected. [from 1950s] Antonym: overachiever ==== Translations ==== === Further reading === underachiever on Wikipedia.Wikipedia