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Word

betray

verb C1
/bɪˈtɹeɪ/

Meanings

verb

to be disloyal to someone or to break their trust

betray: to be disloyal to someone or to break their trust
verb

to reveal a secret or private information

betray: to reveal a secret or private information
verb

to unintentionally show a feeling or fact through behavior or appearance

betray: to unintentionally show a feeling or fact through behavior or appearance

Definition

To betray someone is to be disloyal or to break their trust.

To betray means to act against someone who trusts you, often by being disloyal, revealing secrets, or supporting an opposing side. It can also mean to show something unintentionally, such as fear or excitement, through your voice, face, or actions. In both cases, the idea is that something expected to be hidden or protected is given away.

Examples

  • After years of teamwork, he refused to betray his colleagues by leaking their plans to a competitor.
  • I won’t betray your confidence, even if the story would make me look important.
  • Her calm tone was convincing, but her shaking hands betrayed her nerves.
  • They felt she had betrayed them when she publicly supported the opposing proposal without warning.

Common mistake

Learners often confuse "betray" with "deceive"; "betray" emphasizes broken loyalty or trust, not just tricking someone.