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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One analyst who praised the plan was accused of being a race traitor, and other critics have voiced fears that China will be overrun by outsiders.—
Ben Smith,
semafor.com,
17 Oct. 2025
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The high-concept social experiment show, in which a group of strangers work together to uncover the traitors, sorry, werewolves, amongst them, was a breakout hit on Canal+ in France and has already been adapted for ARD’s online service in Germany.—
Scott Roxborough,
HollywoodReporter,
15 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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Like canaries in the coal mine ocean form.—
Ashley Miznazi,
Miami Herald,
16 Oct. 2025
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Here’s what the canaries are telling us.—
Big Think,
Big Think,
13 Oct. 2025
Noun
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Created by the visionary behind the Oscar-winning Pinocchio (2022), this Emmy-winning anthology horror series presents eight visually thrilling, nightmarish tales, ranging from colossal rats to alien parasites.—
Kelsie Gibson,
PEOPLE,
23 Oct. 2025
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One, initially released in 2016, claimed that cellphone radiation causes cancer based on findings from rats, though only male rats.—
ArsTechnica,
ArsTechnica,
23 Oct. 2025
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Cite this Entry
“Betrayer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/betrayer. Accessed 29 Oct. 2025.
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