TREASONOUS Synonyms: 32 Similar and Opposite Words

treasonous

adjective

Definition of treasonous

as in traitorous

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Recent Examples of treasonous Set against the wave of democratization and cultural modernization that swept through South Korea in the early 1990s, the series centers on a middle-class family concealing a treasonous secret. — Naman Ramachandran, Variety, 25 Mar. 2026 And remember too, putting your name on the Declaration of Independence was treasonous. — Mo Rocca, CBS News, 22 Feb. 2026 After all, who doesn’t hate Nazi, fascist, racist, white supremacist, authoritarian, extremist, cultist, misogynist, treasonous tyrants? — Chris Roemer, Baltimore Sun, 12 Feb. 2026 The president seemed to be heading toward political exile, his election claims destined to be inscribed in history as treasonous lies. — Jamie Thompson, The Atlantic, 6 Jan. 2026 See All Example Sentences for treasonous

Recent Examples of Synonyms for treasonous

Adjective

And at the very center of Hell is Satan himself, the traitorous Archangel Lucifer, depicted as a monstrous creature with wings and three heads.

— Keith Cooper, Space.com, 11 May 2026
Russell fabricates a lie with the rest of the villains, and the heroes believe it, despite a warning from one traitorous tribemate.

— Literary Hub, Literary Hub, 5 Dec. 2025

Definition of traitorous

Adjective

Lai, the founder of Hong Kong’s now-shuttered pro-democracy newspaper Apple Daily, is serving a 20-year prison sentence after being convicted on charges including conspiring with foreign forces and publishing seditious material.

— Elmira Aliieva, NBC news, 5 July 2026
Hong Kong police arrested two people in June on suspicion of selling seditious publications and receiving funds from foreign political organizations, acting under a recent national security law.

— ABC News, ABC News, 2 July 2026

Definition of seditious

Adjective

Currently, ocean data are gathered using massive research vessels that cannot safely navigate treacherous shallow reefs or breaking ice.

— Mrigakshi Dixit, Interesting Engineering, 9 July 2026
Projecting forward four years in this game is always treacherous, more so now than following the 2022 World Cup.

— Tom Bogert, New York Times, 9 July 2026

Definition of treacherous

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treason

treasonous

treasons

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“Treasonous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/treasonous. Accessed 12 Jul. 2026.

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Synonyms of treasonous

adjective

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