The condition of one who is without the true faith, either because faith, once accepted, was culpably rejected (apostasy); or because faith was never possessed owing to one of the following reasons:
  1. ignorance of sufficient motives for accepting the faith (negative infidelity)
  2. culpable negligence to inquire into its credentials when these were proposed (privative infidelity)
  3. obstinate refusal to accept a well authenticated revelation (positive infidelity)
New Catholic Dictionary

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