treachery

American

[trech-uh-ree] / ˈtrɛtʃ ə ri /

noun

plural

treacheries

violation of faith; betrayal of trust; treason.

Antonyms:

loyalty
an act of perfidy, faithlessness, or treason.

treachery British

/ ˈtrɛtʃərɪ /

noun

the act or an instance of wilful betrayal
the disposition to betray

"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

Related Words

See disloyalty.

Etymology

Origin of treachery

First recorded in 1175–1225; Middle English trecherie, from Middle French, Old French, from trech(ier) “to deceive” ( trick ) + -erie -ery

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They hear themselves in her lyrics and see themselves in her public persona, as she navigates love, heartbreak, illness, treachery and finding your place in the world.

From BBC

Lizza, in his own statement, said: “Telling the truth is not harassment and accountability is not an ax, though I understand why Olivia finds it unpleasant to be confronted with her treachery and betrayal.”

From The Wall Street Journal

If Edward Ashton had planned a final act of treachery, the time to attempt it was now.

From Literature

She branded the culprits "cowards" who had committed an act of "treachery".

From BBC

Ms Kemkaran previously said those behind the leak were "weak" and "foolish" to have committed an act of "treachery", and that a "thorough investigation" had been launched.

From BBC

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023