as in betrayal
the act or fact of violating the trust or confidence of another
was furious that she revealed his secret and never forgave her for the treachery
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Recent Examples of treachery
In a way, journalism was the ultimate expression of her class treachery.
—
Rachel Syme, New Yorker, 1 Dec. 2025
And when the surviving crew interrogates the android Ash about his treachery, the book has him pretty much spill the space beans.
—Daniel Dockery, Vulture, 22 Sep. 2025
When does compromise become treachery or defeat?
—Literary Hub, 3 Sep. 2025
Could Juno be behind this treachery, as payback for David destroying her spy corporation and for changing his oldest daughter into a killer?
—Demetrius Patterson, HollywoodReporter, 27 Aug. 2025
See All Example Sentences for treachery
Rachel Syme, New Yorker, 1 Dec. 2025
And when the surviving crew interrogates the android Ash about his treachery, the book has him pretty much spill the space beans.
—Daniel Dockery, Vulture, 22 Sep. 2025
When does compromise become treachery or defeat?
—Literary Hub, 3 Sep. 2025
Could Juno be behind this treachery, as payback for David destroying her spy corporation and for changing his oldest daughter into a killer?
—Demetrius Patterson, HollywoodReporter, 27 Aug. 2025
See All Example Sentences for treachery
Recent Examples of Synonyms for treachery
Noun
-
It’s filled with super-heightened emotions; unrestrained passion, betrayal, evil and even a magic spell or two.—
David Lyman,
Cincinnati Enquirer,
5 Feb. 2026
-
What’s most striking about the response is the sense of betrayal about Aronofsky’s involvement.—
Jake Kanter,
Deadline,
5 Feb. 2026
Noun
-
Until now, the idea that the secretary of defense would accuse a lawmaker of treason simply for disagreeing with him would be laughable.—
Missy Ryan,
The Atlantic,
9 Feb. 2026
-
Saudi Arabi accused the UAE of supporting the separatists, and smuggling the STC leader, Aidarous al-Zubaidi, who is wanted for treason, out of Yemen and flying him to Abu Dhabi.—
Arkansas Online,
Arkansas Online,
8 Feb. 2026
Cite this Entry
“Treachery.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/treachery. Accessed 16 Feb. 2026.
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