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Meaning of impeach

im•peach

Pronunciation: (im-pēch'), [key]
— v.t.
  1. to accuse (a public official) before an appropriate tribunal of misconduct in office.
  2. to challenge the credibility of: to impeach a witness.
  3. to bring an accusation against.
  4. to call in question; cast an imputation upon: to impeach a person's motives.
  5. to call to account.
—n.
  1. impeachment.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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