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Verb: betray  bi'trey
  1. Reveal unintentionally
    "Her smile betrayed her true feelings"
    - bewray [archaic]
     
  2. Deliver to an enemy by treachery
    "The spy betrayed his country"
    - sell
     
  3. Disappoint, prove undependable to; abandon, forsake
    "His sense of smell betrayed him this time"
    - fail
     
  4. Be sexually unfaithful to one's partner in marriage
    "She betrays her husband"
    - cheat on, cheat, cuckold, wander
     
  5. Give away information about somebody
    "He betrayed his classmate who had cheated on the exam"
    - denounce, tell on, give away, rat, grass, shop, snitch, stag
     
  6. Cause someone to believe an untruth
    "The insurance company betrayed me when they told me they were covering my house"
    - deceive, lead astray

Derived forms: betrayed, betraying, betrays

See also: betrayal, betrayer

Type of: break, bring out, cozen, deceive, delude, disappoint, disclose, discover, disinform, divulge, expose, give away, inform, lead on, let down, let on, let out, misinform, mislead, reveal, unwrap

Encyclopedia: Betray