WordReference Random House Learner's Dictionary of American English © 2020 be•tray /bɪˈtreɪ/USA pronunciation
v. [~ + object]WordReference Random House Unabridged Dictionary of American English © 2020
be•tray•er, n. [countable]
- to deliver or expose to an enemy by treachery:[~ + object (+ to + object)]Benedict Arnold tried to betray his country to the enemy.
- to be unfaithful or disloyal to: to betray one's friends.
- to reveal or make known (a secret given in confidence):to betray a plan.
- to reveal unconsciously (something a person would prefer to hide):The nervousness on her face betrays her insecurity.
- to be unfaithful to (someone) by having sexual relations with someone else:He vowed never to betray his wife again.
(bi trā′),USA pronunciation v.t.
- to deliver or expose to an enemy by treachery or disloyalty:Benedict Arnold betrayed his country.
- to be unfaithful in guarding, maintaining, or fulfilling:to betray a trust.
- to disappoint the hopes or expectations of;
be disloyal to:to betray one's friends.
- to reveal or disclose in violation of confidence:to betray a secret.
- to reveal unconsciously (something one would preferably conceal):Her nervousness betrays her insecurity.
- to show or exhibit;
disclose:an unfeeling remark that betrays his lack of concern.
- to deceive, misguide, or corrupt:a young lawyer betrayed by political ambitions into irreparable folly.
- to seduce and desert.
- Latin trādere to betray. See traitor
- Old French trair
- Middle English bitraien, equivalent. to bi- be- + traien 1200–50
- 4.See corresponding entry in Unabridged bare, expose, tell, divulge.
- 6.See corresponding entry in Unabridged display, manifest, expose, uncover.
- 4, 6.See corresponding entry in Unabridged hide, conceal.
Collins Concise English Dictionary © HarperCollins Publishers::
betray /bɪˈtreɪ/ vb (transitive)
Etymology: 13th Century: from be- + trayen from Old French trair, from Latin trāderebeˈtrayal n beˈtrayer n
- to hand over or expose (one's nation, friend, etc) treacherously to an enemy
- to disclose (a secret, confidence, etc) treacherously
- to break (a promise) or be disloyal to (a person's trust)
- to show signs of; indicate
- to reveal unintentionally: his grin betrayed his satisfaction
'betray' also found in these entries: