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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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 -
The Nazis set up secret squads in the camps to conduct beatings and killings of prisoners thought to be too friendly with U.S. officials or were accused of being informers.—
Peter Lucas,
Boston Herald,
10 July 2025
Noun
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Modern American presidents have called their domestic political opponents, or enemies, many things over the years, but never a traitor.—
Peter Lucas,
Boston Herald,
28 July 2025
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In the game, traitors are secretly chosen at the outset while the remaining contestants must work together to unmask them before being eliminated themselves.—
Naman Ramachandran,
Variety,
25 June 2025
Noun
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Late last month, the Justice Department revealed that the cartel hired hacker who was able to infiltrate phone data and Mexico City's surveillance cameras to help track and kill FBI informants.—
CBS News,
CBS News,
16 July 2025
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Then, in 1984, an informant revealed that a contract had been taken out on the life of a blond woman.—
Longreads,
Longreads,
8 July 2025
Noun
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In addition, the Trump Administration’s disbanding of the Federal Statistics Advisory Committee in March both eliminated one of the main engines for enhancing agency performance and, perhaps, in what should have been a concerning harbinger, abolished the canary in the data integrity coal mine.—
Jeffrey Sonnenfeld,
Time,
2 Aug. 2025
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Hogan was the canary in the coal mine; what came out was John Cena and a CGI eagle.—
Tony Maglio,
HollywoodReporter,
24 July 2025
Noun
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The dye was linked to thyroid cancer risks in rats as well as behavioral issues in children such as hyperactivity.—
Omer Awan,
Forbes.com,
13 July 2025
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Fulton County was reported to have 318 rodents for every 1,000 homes, while Susquehanna County was found to have 301 mice and rats per 1,000 housing units.—
Soo Kim,
MSNBC Newsweek,
9 July 2025
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Cite this Entry
“Betrayer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/betrayer. Accessed 7 Aug. 2025.
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