treach·​ery | \ ˈtre-chə-rē How to pronounce treachery (audio) , ˈtrech-rē \
plural treacheries

Definition of treachery

1 : violation of allegiance or of faith and confidence : treason
2 : an act of perfidy or treason

Examples of treachery in a Sentence

a tale of treachery and revenge was furious that she revealed his secret and never forgave her for the treachery
Recent Examples on the Web Lord Coryls Velaryon supported Rhaenyra in her claim to the throne, but after a series of events, is accused of treachery and arrested. Emily Burack, Town & Country, 4 Sep. 2022 The book is a gripping narrative of Soviet treachery that the defector shaped in collaboration with the American writer Eugene Lyons, and it is perhaps best remembered for its discussion of Stalin’s gulags. Bill Donahue, Washington Post, 17 Aug. 2022 In reality, Monmouth and his Protestant followers rebelled against James II's coronation, and Monmouth was beheaded for his treachery when that rebellion failed. Jennifer Ouellette, Ars Technica, 10 June 2022 The beauty and power of Snyder’s cinematic vision are what matters most, but Rolling Stone’s allegation of showbiz treachery demonstrates how venal media operatives (always corporate allies) can be. Armond White, National Review, 29 July 2022 Desperation, treachery and suspense abound in a story based on actual events. Katherine A. Powers, Washington Post, 29 July 2022 Film and literary history are replete with examples of corruptors, nefarious characters who seek to gain their way by trickery, treachery, and manipulation for one end or another. Jeff Ewing, Forbes, 24 June 2022 The performance starts off on a note of bravura and then descends into treachery, drug mania, and fear. Owen Gleiberman, Variety, 26 May 2022 But treachery in the court of Sultan Suleiman (Lachy Hulme) breaks up that party. David Rooney, The Hollywood Reporter, 20 May 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'treachery.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of treachery

13th century, in the meaning defined at sense 1

History and Etymology for treachery

Middle English trecherie, from Anglo-French, from trecher, tricher to deceive, from Vulgar Latin *triccare — more at trick entry 1

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The first known use of treachery was in the 13th century

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Last Updated

20 Sep 2022

Cite this Entry

“Treachery.” Dictionary, Merriam-Webster, Accessed 24 Sep. 2022.

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More Definitions for treachery


treach·​ery | \ ˈtre-chə-rē How to pronounce treachery (audio) \
plural treacheries

Kids Definition of treachery

1 : the behavior of a person who betrays trust or faith a tale of treachery and revenge
2 : an act or instance of betraying trust or faith She was hurt by her friend's treacheries.

More from Merriam-Webster on treachery

Nglish: Translation of treachery for Spanish Speakers

Britannica English: Translation of treachery for Arabic Speakers

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