Meaning of impugn

im•pugn

Pronunciation: (im-pyn'), [key]
— v.t.
  1. to challenge as false (another's statements, motives, etc.); cast doubt upon.
  2. to assail (a person) by words or arguments; vilify.
  3. to attack (a person) physically.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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