Definition of betray

verb (v)

• reveal unintentionally (verb.communication)

  Synonym: bewray
  

  Example:
  Her smile betrayed her true feelings.
  

  source: wordnet30
• deliver to an enemy by treachery (verb.social)

  Synonym: sell
  

  Example:
  The spy betrayed his country.
  

  source: wordnet30
• disappoint, prove undependable to; abandon, forsake (verb.emotion)

  Synonym: fail
  

  source: wordnet30
• be sexually unfaithful to one's partner in marriage (verb.social)

  Synonym: cheat, cheat on, cuckold, wander
  

  source: wordnet30
• give away information about somebody (verb.communication)

  Synonym: denounce, give away, grass, rat, shit, shop, snitch, stag, tell on
  

  source: wordnet30
• cause someone to believe an untruth (verb.communication)

  Synonym: deceive, lead astray
  Antonym: undeceive
  

  source: wordnet30
• To deliver into the hands of an enemy by treachery or fraud, in violation of trust; to give up treacherously or faithlessly; as, an officer betrayed the city. (verb)

  source: webster1913

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