as in treachery
the act or fact of violating the trust or confidence of another
reading a friend's diary without permission would have to be regarded as the ultimate act of personal treason
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Recent Examples of treason
Consider this evilmeister’s brazen acts of treason and revenge, unbounded deceit, swinish immorality and negative role modeling.
—
Voice Of The People, New York Daily News, 5 Apr. 2026
Capital punishment is technically legal in Israel but only for crimes against humanity and treason.
—Matt Bradley, NBC news, 1 Apr. 2026
One was an Israeli army officer executed for treason in 1948, and the second was Adolf Eichmann, a key architect of the Holocaust, who was hanged in 1962 after he famously was captured by Israeli intelligence agents in Argentina and was subsequently convicted in a landmark trial in Israel.
—Tal Shalev, CNN Money, 30 Mar. 2026
After being tricked by Scarpia, Cavaradossi is hanged for treason.
—Courtney Lewis, Florida Times-Union, 28 Mar. 2026
See All Example Sentences for treason
Voice Of The People, New York Daily News, 5 Apr. 2026
Capital punishment is technically legal in Israel but only for crimes against humanity and treason.
—Matt Bradley, NBC news, 1 Apr. 2026
One was an Israeli army officer executed for treason in 1948, and the second was Adolf Eichmann, a key architect of the Holocaust, who was hanged in 1962 after he famously was captured by Israeli intelligence agents in Argentina and was subsequently convicted in a landmark trial in Israel.
—Tal Shalev, CNN Money, 30 Mar. 2026
After being tricked by Scarpia, Cavaradossi is hanged for treason.
—Courtney Lewis, Florida Times-Union, 28 Mar. 2026
See All Example Sentences for treason
Recent Examples of Synonyms for treason
Noun
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Inflamed by Ratansen’s adviser’s account of Padmavati’s beauty, Alauddin Khalji storms the fortress by treachery rather than valor.—
Encyclopedia Britannica,
Encyclopedia Britannica,
9 Apr. 2026
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But Bateman's treachery also had a distinctly silly side.—
Ryan Coleman,
Entertainment Weekly,
8 Apr. 2026
Noun
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The friendship betrayal/love triangle of Ciara Miller, West Wilson, and Amanda Batula is still being dissected through thousands of TikTok and Instagram comments.—
Bethy Squires,
Vulture,
30 Apr. 2026
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The betrayal of Zambada sparked a vicious battle for control of the Sinaloa cartel that has resulted in thousands of deaths.—
Kate Linthicum,
Los Angeles Times,
30 Apr. 2026
Cite this Entry
“Treason.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/treason. Accessed 2 May. 2026.
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