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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Frizer and Skeres were fraudsters, and the sinister Poley was an informer, crucial to the exposure of the Babington Plot.—
Anthony Lane,
New Yorker,
8 Sep. 2025 -
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
Noun
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As security officer of the Maginot, Morrow abandons his post to kill the traitor — allowing the ship to continue its collision course into Earth.—
Daniel D'Addario,
Variety,
3 Sep. 2025
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Bolsonaro and his son Eduardo, who has been actively lobbying against Brazil in Washington, have both been branded as traitors by Lula supporters.—
HUSSEIN KALOUT,
Foreign Affairs,
2 Sep. 2025
Noun
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Supporting characters also left their mark, most notably Antonio Fargas as Huggy Bear, the streetwise informant who balanced comic relief with genuine charm.—
Marc Berman,
Forbes.com,
10 Sep. 2025
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In 1985, Tortora was accused by several alleged ex-mobsters turned informants and state witnesses of being part of a Neapolitan crime syndicate dedicated to drug trafficking.—
Nick Vivarelli,
Variety,
10 Sep. 2025
Noun
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The record number of defaults is a canary in the coal mine for large-scale economic problems, the Consumer Federation of America (CFA) warned.—
Betty Lin-Fisher,
USA Today,
11 Sep. 2025
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Black women are the canary in the coal mine on the health of the economy.—
Marianne Cooper,
Time,
9 Sep. 2025
Noun
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Research performed on rats found that when TPO was ingested, reproductive difficulties and negative effects on the endocrine (hormonal) systems followed.—
Morgan Fargo,
Vogue,
10 Sep. 2025
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Inspectors shut down the Thai restaurant in Rancho Cordova aftering finding approximately 50 rat droppings below the water heater in the back of the kitchen and about 15 to 25 droppings throughout the corners of the cook’s line, the front counter in the lobby and the back of dry storage area.—
Sacbee.com,
Sacbee.com,
10 Sep. 2025
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Cite this Entry
“Betrayer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/betrayer. Accessed 17 Sep. 2025.
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