betray

[bih-trey]

verb (used with object)


Origin of betray

1200–50; Middle English bitraien, equivalent to bi- be- + traien < Old French trair < Latin trādere to betray. See traitor
Related formsbe·tray·al, nounbe·tray·er, nounpre·be·tray, verb (used with object)pre·be·tray·al, nounself-be·tray·al, nounself-be·tray·ing, adjectiveun·be·trayed, adjectiveun·be·tray·ing, adjective

Synonyms for betray

Antonyms for betray

4, 6. hide, conceal.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019


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British Dictionary definitions for betray

betray

verb (tr)

to aid an enemy of (one's nation, friend, etc); be a traitor toto betray one's country
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 disappoint the expectations of; failhis tired legs betrayed him
to show signs of; indicateif one taps china, the sound betrays any faults
to reveal unintentionallyhis grin betrayed his satisfaction
betray oneself to reveal one's true character, intentions, etc
to lead astray; deceive
euphemistic to seduce and then forsake (a woman)
Derived Formsbetrayal, nounbetrayer, noun

Word Origin for betray

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

Word Origin and History for 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