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| be·tray [ bi tráy ] (past and past participle be·trayed, present participle be·tray·ing, 3rd person present singular be·trays) |
transitive verb |
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| Definition: |
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1. help enemy: to harm or be disloyal to a country or another person by helping an enemy or giving information that is confidential
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2. surrender somebody or something treacherously: to deliver somebody or something to an enemy
  He betrayed his own brother to the secret police.
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3. go against promise: to act in a way that is contrary to a promise made
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4. reveal something: to show something, often unintentionally
She said nothing, but her bright eyes betrayed her excitement.
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| [13th century. <be1 + Old French trair< Latin tradere "hand over"] |
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| be·tray·al noun |
| be·tray·er noun |
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