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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When an anarchist frames one of them for treason, another is determined to track down a traitor.—
Carly Tagen-Dye,
PEOPLE,
2 Nov. 2025
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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
Noun
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To date, none of the criminal complaints filed in this case mention any anti-gay text messages, social media posts or comments made by the defendants, whose communications were being secretly monitored and taped by undercover informants and agents.—
John Wisely,
Freep.com,
10 Nov. 2025
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In 2020, the high court ruled that Muslim men who claimed their religious rights were violated for being placed on the government’s no-fly list after refusing to serve as FBI informants could sue the FBI agents for damages.—
Maureen Groppe,
USA Today,
10 Nov. 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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However, there are numerous animal studies on mice and rats that show positive effects of intermittent fasting to improve insulin sensitivity and normalize blood glucose levels.—
Bryant Stamford,
Louisville Courier Journal,
6 Nov. 2025
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By day there are parades, rat control events, and grand juries to attend, but night is when the mayor comes alive, at crypto coin launch events, sweaty outer borough raves sponsored by a new credit card, and downtime at his pad in Fort Lee.—
James Folta,
Literary Hub,
6 Nov. 2025
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Cite this Entry
“Betrayer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/betrayer. Accessed 17 Nov. 2025.
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