IPA: /ˌʌndərəˈtʃiv/
KK: /ʌndərəˈtʃiv/
To do less well than what is expected or possible, often not reaching one's full potential.
Many students underachieve because they do not apply themselves in their studies.
Past: underachieved
Past Participle: underachieved
Underachieve → It is formed from "under-" (meaning below or beneath) and "achieve" (from Old French *achever*, meaning to complete or bring to a conclusion). The word "underachieve" means to achieve less than what is expected or to fall short of one's potential.
Think of doing less than what is expected ('under-') when it comes to completing something ('achieve').