con·fes·sor /kənˈfɛsɚ/
  自白者;懺悔者;篤信者
  Con·fess·or n.
  1. One who confesses; one who acknowledges a fault, or the truth of a charge, at the risk of suffering; specifically, one who confesses himself a follower of Christ and endures persecution for his faith.
     He who dies for religion is a martyr; he who suffers for it is a confessor.   --Latham.
     Our religion which hath been sealed with the blood of so many martyrs and confessors.   --Bacon.
  2. A priest who hears the confessions of others and is authorized to grant them absolution.
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  confessor
       n 1: a priest who hears confession and gives absolution
       2: someone who confesses (discloses information damaging to
          themselves)