treasonous

adjective

trea·​son·​ous ˈtrē-zə-nəs How to pronounce treasonous (audio)
ˈtrēz-nəs

Examples of treasonous in a Sentence

Recent Examples on the Web
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Lord is interviewed on the news for comment on Luthor's treasonous acts. EW.com, 11 July 2025 Others, especially older folks who had lived through World War II, felt any antiwar sentiment was treasonous. Michael Barnes, Austin American Statesman, 2 July 2025 Visiting them, you’re surrounded by centuries of royal secrets, scandals, treasonous plots, and the fearsome power of England’s monarchy. Joseph V Micallef, Forbes.com, 28 June 2025 In my America, like Pope Leo’s, speaking multiple tongues and being a citizen of multiple countries is normal, not treasonous — Leo is a dual Peruvian U.S. citizen who speaks five languages. Gustavo Arellano, Los Angeles Times, 10 May 2025 See All Example Sentences for treasonous

Word History

First Known Use

1593, in the meaning defined above

Time Traveler
The first known use of treasonous was in 1593

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Cite this Entry

“Treasonous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/treasonous. Accessed 21 Jul. 2025.

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