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betray

[bih-trey] /bɪˈtreɪ/
verb (used with object)
1.
to deliver or expose to an enemy by treachery or disloyalty:
Benedict Arnold betrayed his country.
2.
to be unfaithful in guarding, maintaining, or fulfilling:
to betray a trust.
3.
to disappoint the hopes or expectations of; be disloyal to:
to betray one's friends.
4.
to reveal or disclose in violation of confidence:
to betray a secret.
5.
to reveal unconsciously (something one would preferably conceal):
Her nervousness betrays her insecurity.
6.
to show or exhibit; reveal; disclose:
an unfeeling remark that betrays his lack of concern.
7.
to deceive, misguide, or corrupt:
a young lawyer betrayed by political ambitions into irreparable folly.
8.
to seduce and desert.
Origin
1200-1250
1200-50; Middle English bitraien, equivalent to bi- be- + traien < Old French trair < Latin trādere to betray. See traitor
Related forms
betrayal, noun
betrayer, noun
prebetray, verb (used with object)
prebetrayal, noun
self-betrayal, noun
self-betraying, adjective
unbetrayed, adjective
unbetraying, adjective
Synonyms
4. bare, expose, tell, divulge. 6. display, manifest, expose, uncover.
Antonyms
4, 6. hide, conceal.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for betrayed
  • With this gross misuse of power, the board has not only betrayed the faculty members and administrators involved.
  • She then feels extremely betrayed when she finds out he's a robot.
  • If your colleagues find out about your search, they could feel resentful or even betrayed.
  • The main benefit of trust is for the comfort of children, who are all too often traumatized when it is betrayed.
  • The dark circles under his eyes betrayed his sleepless nights.
  • Those she left behind felt betrayed and wondered if she'd taken leave of her senses.
  • Even if you aren't close enough to consider one another friends, you'll still feel betrayed.
  • The trust people put in scientists has been betrayed.
  • He told me how they lied for years, pretending to be friends and then betrayed those friends to their deaths.
  • Since neither of us was involved with anyone else, there was no one to be betrayed.
British Dictionary definitions for betrayed

betray

/bɪˈtreɪ/
verb (transitive)
1.
to aid an enemy of (one's nation, friend, etc); be a traitor to: to betray one's country
2.
to hand over or expose (one's nation, friend, etc) treacherously to an enemy
3.
to disclose (a secret, confidence, etc) treacherously
4.
to break (a promise) or be disloyal to (a person's trust)
5.
to disappoint the expectations of; fail: his tired legs betrayed him
6.
to show signs of; indicate: if one taps china, the sound betrays any faults
7.
to reveal unintentionally: his grin betrayed his satisfaction
8.
betray oneself, to reveal one's true character, intentions, etc
9.
to lead astray; deceive
10.
(euphemistic) to seduce and then forsake (a woman)
Derived Forms
betrayal, noun
betrayer, noun
Word Origin
C13: from be- + trayen from Old French trair, from Latin trādere
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for betrayed

betray

v.

late 13c., bitrayen "mislead, deceive, betray," from be- + obsolete Middle English tray, from Old French traine "betrayal, deception, deceit," from trair (Modern French trahir) "betray, deceive," from Latin tradere "hand over," from trans- "across" (see trans-) + dare "to give" (see date (n.1)). Related: Betrayed; betraying.

Online Etymology Dictionary, © 2010 Douglas Harper
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