What does "flunk" mean?

Flunk: To fail, as on a lesson; to back out, as from an undertaking, through fear.

Additional senses

  1. 2.To fail in; to shirk, as a task or duty. [Colloq. U.S.]
  2. 3.A failure or backing out; specifically (College cant), a total failure in a recitation. [U.S.]

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