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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His brother Jun-ho is still searching for the island and is unaware there’s a traitor in his group.—
Monica Mercuri,
Forbes.com,
23 June 2025
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Young-il’s brother is still searching for the island — but a traitor on the boat is preventing the detective from reaching the game site.—
Monica Mercuri,
Forbes.com,
28 June 2025
Noun
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Moreland's plan failed as Pedigo became a confidential informant for the FBI, adding to the federal government's case for obstruction of justice and witness tampering.—
Hadley Hitson,
The Tennessean,
17 July 2025
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Nationwide, there have been 256 exonerations tied to the use of jailhouse informants, according to the National Registry of Exonerations.—
Kristine Phillips,
IndyStar,
2 July 2025
Noun
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But as Malik Rahim puts it, New Orleans was just the canary in the American coal mine.—
Daniel Fienberg,
HollywoodReporter,
22 July 2025
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But the small-cap Russell 2000, the canary in the coal mine, and the old economy industrials, the DJIA, appear to be singing from a different hymn book.—
Robert Barone,
Forbes.com,
21 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 30 Jul. 2025.
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