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1
: one who betrays another's trust or is false to an obligation or duty
2
: one who commits treason
Synonyms
Examples of traitor in a Sentence
She has been called a traitor to the liberal party's cause.
He was a traitor who betrayed his country by selling military secrets to the enemy.
Recent Examples on the Web
Dorinda Medley couldn't identify the traitors—or a few of her fellow faithfuls—on the latest season of The Traitors.
—Charna Flam, People.com, 16 Jan. 2025
The number in the castle was therefore whittled down to the standard 22, with three then selected as traitors by host Claudia Winkleman.
—Max Goldbart, Deadline, 2 Jan. 2025
Of course, traitors to the Empire were persecuted and executed too.
—Fran Ruiz, Space.com, 28 Dec. 2024
The remaining players will therefore have to rely on their instincts to know whether there is still a traitor left in the game.
—Max Goldbart, Deadline, 2 Jan. 2025
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Word History
Etymology
Middle English traytour, from Anglo-French traitre, from Latin traditor, from tradere to hand over, deliver, betray, from trans-, tra- trans- + dare to give — more at date
First Known Use
13th century, in the meaning defined at sense 1
Time Traveler
The first known use of traitor was
in the 13th century
Phrases Containing traitor
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Cite this Entry
“Traitor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/traitor. Accessed 22 Jan. 2025.
Kids Definition
traitor
noun
trai·tor
ˈtrāt-ər
1
: one who betrays another's trust or is false to an obligation or duty
2
: one who commits treason
More from Merriam-Webster on traitor
Nglish: Translation of traitor for Spanish Speakers
Britannica English: Translation of traitor for Arabic Speakers
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