treachery

noun

ˈtre-chə-rē How to pronounce treachery (audio)
Definition of treacherynext
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

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

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.
Recent Examples of treachery For his treachery in conspiring with Gwayne, Daemon claims Corlys as his own prisoner. — Amanda Whiting, Vulture, 10 Aug. 2026 Guides spoke of the monthlong siege that ended only because of the treachery of a local noble who turned on the sultan and allowed British troops to scale the walls. — Ishaan Tharoor, New Yorker, 2 July 2026 This is not treachery but the truest and noblest affection. — Ann Manov, Harpers Magazine, 23 June 2026 Peacock’s adventures in treachery The Traitors was the top dog, scoring five prizes including Best Competition Series and Best Host for Alan Cumming. — Erik Pedersen, Deadline, 3 June 2026 See All Example Sentences for treachery
Recent Examples of Synonyms for treachery
  1. betrayal
  2. treason
Noun
  • In this painful experience, one is exposed (the betrayal that is blushing) and longs to hide oneself.
    — Eugenie Brinkema, ARTnews.com, 17 Oct. 2026
  • Someone to blame Burns knows the cost of Salem’s betrayals about as well as anyone.
    — Jennifer Byrne, Popular Science, 15 Oct. 2026
Definition of betrayal
Noun
  • When a pair of Israeli filmmakers released a documentary last month about civilian deaths in Gaza, party leaders across the spectrum, including Eisenkot, accused them of treason.
    — Arkansas Online, Arkansas Online, 8 Oct. 2026
  • In 1990, senior West German counterintelligence official Klaus Kuron was ​exposed as a Stasi spy and later convicted of treason.
    — Reuters, NBC news, 7 Oct. 2026
Definition of treason

Browse Nearby Words

treacherousness
treachery
tread
See all Nearby Words

Cite this Entry

“Treachery.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/treachery. Accessed 21 Oct. 2026.

Copy Citation
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Last Updated: - Updated example sentences

More from Merriam-Webster

Word of the Day

Listen to the pronunciation of jilt

See Definitions and Examples »

Popular in Grammar & Usage

See More

Merriam-Webster’s Great Big List of Words You Love to Hate

'Can' vs. 'May'

'Affect' vs. 'Effect'

More Commonly Mispronounced Words

Is it 'nerve-racking' or 'nerve-wracking'?
See More

Popular in Wordplay

See More

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

Did 'orange' the fruit or the color come first?

Even More Bird Names that Sound Like Insults (and Sometimes Are)

12 Lovely and Unusual Words for the Natural World
See More

Popular

See More

Merriam-Webster’s Great Big List of Words You Love to Hate

The Longest Long Words List

9 Words That Sound Like Insults But Aren't
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
artwork of illustrated limes with the text limes and smile with an arrow connecting the two words
Quiz: Spot the Anagram! Scramble these words to find new words with the e...
See All