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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Hemphill spoke alongside former Capitol police officer Winston Pingeon, who described being punched in the face, pepper sprayed, and called a traitor by the rioters.—
Aidan McLaughlin,
Vanity Fair,
7 Jan. 2026
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The J6ers were not insurrectionists, traitors, and miscreants but patriots, heroes, and innocents.—
Jamie Thompson,
The Atlantic,
6 Jan. 2026
Noun
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Hobart Police Detective Wendell Hite wrote that police dropped off a criminal informant outside the mall to buy drugs from Larkin in a black Lincoln in the parking lot.—
Meredith Colias-Pete,
Chicago Tribune,
24 Jan. 2026
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Adrian Jimenez, 44, met Espinoza Martinez through his small construction business, but that witness has a felony record and – unbeknownst to the Martinez – has also been working as a police informant since the 1990s.—
Sara Machi,
CBS News,
21 Jan. 2026
Noun
-
While Chicago is the canary in the coal mine, the legislative resistance to choice affects the entire state.—
The Editorial Board,
Chicago Tribune,
22 Jan. 2026
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Against a backdrop of teak wood and bamboo, driftwood bedposts make the mosquito nets look like chic bed drapes, while canary-yellow day beds and blinds add a ray of sunshine to even the dreariest days.—
Chris Schalkx,
Condé Nast Traveler,
12 Jan. 2026
Noun
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The only animals Cook’s crew saw apart from wild birds were rats and chickens, both eaten.—
Literary Hub,
Literary Hub,
28 Jan. 2026
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Testing the powder on rats fed a high-sugar diet, the team found that brushing with BSCT for just one minute a day was enough to restore the rats' oral microbiome, reduce inflammation, and kill the bacteria that causes periodontitis.—
New Atlas,
New Atlas,
27 Jan. 2026
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Cite this Entry
“Betrayer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/betrayer. Accessed 31 Jan. 2026.
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