treachery

noun

treach·​ery ˈtre-chə-rē How to pronounce treachery (audio)
ˈtrech-rē
plural treacheries
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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
But the most intriguing finish—and the most on-brand level of treachery from Heyman—would be Paul stabbing both Roman and Punk in the back for Rollins. Alfred Konuwa, Forbes.com, 19 Apr. 2025 Sinners is about vampires, perpetual outsiders who desperately yearn to belong, but whose silky promises are rooted in treachery. Stephanie Zacharek, Time, 18 Apr. 2025 Later down the line, after being summoned to resolve a conflict that was a front for the Emperor’s treachery, Khazan was deemed a traitor to the empire, and he and his comrades — like Ozma — were executed or exiled for aiding a traitor. Scott McRae, Rolling Stone, 24 Mar. 2025 Because of that treachery Castor was a pure mortal, but Pollux was a half god. Mike Lynch, Twin Cities, 6 Apr. 2025 See All Example Sentences for treachery

Word History

Etymology

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

First Known Use

13th century, in the meaning defined at sense 1

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

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Cite this Entry

“Treachery.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/treachery. Accessed 25 Apr. 2025.

Kids Definition

treachery

noun
treach·​ery ˈtrech-(ə-)rē How to pronounce treachery (audio)
plural treacheries
1
: violation of allegiance or of faith and confidence : treason
2
: an act of treason

More from Merriam-Webster on treachery

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