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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The competition show takes place in Scotland and has cast members divided into two groups, traitors and faithfuls, and the faithfuls try to vote off the traitors to win a cash prize.—
Jenni Fink,
MSNBC Newsweek,
27 Oct. 2025
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The former vice president was also dubbed a traitor by the rioters.—
Michael Nied,
PEOPLE,
27 Oct. 2025
Noun
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Merlino came out on top after a hitman allegedly hired by Stanfa, spurned by Stanfa's refusal to pay him, became an informant for the FBI, per CBS News.—
Randall Colburn,
Entertainment Weekly,
23 Oct. 2025
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Though Cory lets the info slip to Celine as a bargaining chip, another informant spills the beans.—
Dessi Gomez,
Deadline,
22 Oct. 2025
Noun
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Meta’s recent mass layoffs on its AI team are a potential canary in the coal mine, signaling that AI companies might be realizing the boom is coming to an end.—
Nicholas Creel,
MSNBC Newsweek,
29 Oct. 2025
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But some of the interiors seem to belong to another house, like a cheap-looking finished basement with canary-yellow walls and a bathroom with, oddly, a urinal.—
Adriane Quinlan,
Curbed,
28 Oct. 2025
Noun
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These are like dollar store rats.—
Chris Spargo,
PEOPLE,
31 Oct. 2025
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According to a study recently published in the journal Global Ecology and Conservation, rat predation may cause enough damage to significantly threaten local bat populations.—
Sarah Durn,
Popular Science,
30 Oct. 2025
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Cite this Entry
“Betrayer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/betrayer. Accessed 3 Nov. 2025.
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