Definition for PER-FID'I-OUS

PER-FID'I-OUS, a. [L. perfidus; per and fidus, faithful. Per in this word signifies through, beyond, or by, aside.]

  1. Violating good faith or vows; false to trust or confidence reposed; treacherous; as, a perfidious agent; a perfidious friend. [See Perfidy.]
  2. Proceeding from treachery, or consisting in breach of faith; as, a perfidious act.
  3. Guilty of violated allegiance; as, a perfidious citizen; a man perfidious to his country.

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