treachery

noun

treach·ery | \ ˈtre-chə-rē

, ˈtrech-rē\

plural treacheries

Definition of treachery

1 : violation of allegiance or of faith and confidence : treason

2 : an act of perfidy or treason

Synonyms & Antonyms Example Sentences Learn More about treachery

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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

While the original satirized the treachery of French aristocracy during the Ancien Régime, its ’90s counterpart tackles the insular world of Manhattan’s prep schools and Upper East Side. — Janelle Okwodu, Vogue, "Cruel Intentions Is Still a Teenage Fashion Dream 20 Years On," 22 Mar. 2019 The American people cannot withstand that kind of treachery before that kind of secret court in an ex parte proceeding. — Fox News, "McCarthy: Mueller is pursuing obstruction case against Trump," 21 Aug. 2018 The author challenges the popular argument that a privileged upbringing was the root of their treachery. — Helen Fry, WSJ, "‘Enemies Within’ Review: Traitors to Their Class," 13 Dec. 2018 If that's exposing Tyler or some other bit of Klingon treachery—who knows. — Darren Orf, Popular Mechanics, "Last Night's 'Star Trek Discovery' Was a Maze of Confusion," 6 Nov. 2017 Problems arise when criminals bring their beefs and business onto the premises, leading to treachery and mischief and much violence. — Gary Thompson, Philly.com, "Jodie Foster talks about 'Hotel Artemis,' 'Black Mirror,' the business that shaped her, and the business she's helping to shape," 1 June 2018 Hovhannisyan, as a pure-hearted, tragic Siegfried, was the focus of Odile’s treachery and, in the end, the force that triumphed over evil. — Elaine Schmidt, Milwaukee Journal Sentinel, "Milwaukee Ballet's 'Swan Lake' is one gorgeous dance after another," 1 June 2018 Arnold’s treachery is usually put down to his stubborn pride and rivalries with fellow officers. — William Anthony Hay, WSJ, "‘The Tragedy of Benedict Arnold’ and ‘Turncoat’ Review: His Own Worst Enemy," 24 May 2018 For protesters in Greece, any sharing of the M-word is treachery. — The Economist, "Meet a new country: “Northern Macedonia”," 14 June 2018

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.