Definitions

treason

[tree-zuhn] / ˈtri zən /

NOUN

disloyalty

Synonyms

STRONGEST

crime mutiny sedition subversion treachery

STRONG

deceit deceitfulness deception disaffection dishonesty duplicity faithlessness perfidy revolt revolutionary traitorousness

WEAK

breach of faith lèse majesté seditious act seditiousness

Antonyms

STRONG

frankness harmony honesty openness trustworthiness truth truthfulness uprightness

WEAK

allegiance devotion faithfulness fidelity loyalty

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Lukwago has been representing Besigye, who has been jailed on treason charges since being abducted in neighbouring Kenya and forcibly returned to Uganda in late 2024.

From BBC • Jun. 18, 2026

For a long time, openly questioning Ronaldo's place in the team almost felt like treason.

From BBC • Jun. 7, 2026

UN rights chief Volker Turk said this month he was "deeply concerned" by a Cambodian court rejecting Kem Sokha's appeal against his treason sentence on April 30.

From Barron's • May 25, 2026

Congress long had forfeiture rules in place for members who engaged in espionage, treason or other national-security offenses.

From The Wall Street Journal • May 14, 2026

For although I had not intended it, any act that endangered the continuity of the dream was an act of treason.

From "Invisible Man" by Ralph Ellison

Vocabulary lists containing treason

"Macbeth" Vocabulary from Act I

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Liberty, Equality, Vocabulary: The French Revolution

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"The Hunger Games" Vocabulary from Chapter 1

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!