Meaning of underachieve

un•der•a•chieve

Pronunciation: (un"dur-u-chēv'), [key]
— -a•chieved, -a•chiev•ing.
  1. to perform, esp. academically, below the potential indicated by tests of one's mental ability or aptitude.
  2. to perform below expectations or achieve less than expected, esp. by others.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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