1
as in informer
a person who provides information about another's wrongdoing
the arrested drug dealer vowed that he would get his revenge on his betrayer
Synonyms & Similar Words
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2
as in traitor
one who betrays a trust or an allegiance
the betrayer of Anne Frank's family in Amsterdam has never been identified for certain
Synonyms & Similar Words
Example Sentences
Recent Examples of Synonyms for betrayer
Noun
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Option 2: If one prisoner informs while the other stays silent, the informer will go free while the silent one receives the harshest sentence.—
Michael Ashley,
Forbes.com,
29 July 2025 -
Over the past eight decades, the CCP has constructed a vast network of millions of informers and spies whose often unpaid work has been critical to the regime’s survival.—
Minxin Pei,
Foreign Affairs,
6 Feb. 2024
Noun
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Taiwan’s parties, in other words, portray their opponents not just as politically different but as autocratic traitors.—
LEV NACHMAN,
Foreign Affairs,
1 Aug. 2025
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Foundation is worried about the traitors, the Empire is worried about the Galactic Council, the Emperor is worried about the other emperors and the robot.—
Jeff Conway,
Forbes.com,
9 July 2025
Noun
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Additionally, deputies maintained a system to conceal, manage and reward those informants.—
Tony Saavedra,
Oc Register,
29 July 2025
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Marino ended up serving as a confidential informant, wearing multiple wires that captured sound and video.—
Lynsey Eidell,
People.com,
22 July 2025
Noun
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The Challenge and Opportunity NGOs are the canary in the coal mine.—
Robert G. Eccles,
Forbes.com,
11 Aug. 2025
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Charlie Sway, the fund manager, was an old prep-school friend, who knew that Jaron had an eye for the sleeping dog, an ear for the silent canary.—
Annie Proulx,
New Yorker,
10 Aug. 2025
Noun
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In one study, coriander seed extract was found to reduce oxidative stress in the brains of obese rats.—
Brittany Lubeck,
Verywell Health,
5 Aug. 2025
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Black rats seem to be the only species of mammal resistant to the pythons.—
Julia Jacobo,
ABC News,
5 Aug. 2025
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Cite this Entry
“Betrayer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/betrayer. Accessed 22 Aug. 2025.
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