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English definition of “betray”

betray

verb [T]
 
 
/bɪˈtreɪ/
PERSON B2 to behave in a dishonest or cruel way to someone who trusts you: When I heard what he had said about me, I felt betrayed.Disloyalty, betrayal and treason
SECRETS If you betray your country or an organization, you give secret information to its enemies or to other organizations.Disloyalty, betrayal and treason
EMOTION to show an emotion that you were trying to hide: Her face was calm, but her hands betrayed her nervousness.Expressing and showing feelings
(Definition of betray from the Cambridge Learners Dictionary © Cambridge University Press)
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