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be·tray

betray

 
 
pronunciation:
b treI
features:
Word Parts
part of speech: verb
inflections: betrays, betraying, betrayed
definition 1: to help the enemy of; commit treason.
The spy betrayed his country.
synonyms:
double-cross
similar words:
inform on, let down, rat on
definition 2: to not be loyal or faithful to.
She betrayed her friend by telling his secret.
similar words:
breach, double-cross, violate
derivations: betrayal (n.), betrayer (n.)
Word Parts  About this feature
The word betray contains the following part:
be- Old English prefix that means to cover or surround with; to act on or change another.
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The prefix be- forms verbs from nouns and verbs.