Pronunciation: /bɪˈtreɪər/
noun a person who betrays someone or something, such as a trust or loyalty
A1 The betrayer revealed the secret to everyone.
A2 She felt hurt and betrayed by her best friend, who turned out to be a betrayer.
B1 The betrayer's actions caused a lot of damage to the company.
B2 The detective uncovered the identity of the betrayer within the organization.
C1 The betrayer's motives were finally revealed during the trial.
C2 The betrayer's betrayal had far-reaching consequences that affected many people.
formal The betrayer was exposed during the investigation.
informal I can't believe she turned out to be a betrayer.
slang That betrayer really did us dirty.
figurative The dark clouds in the sky seemed like a sign of the betrayer's presence.
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