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
Relevance
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
-
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
-
Opponents aren’t just wrong anymore — they’re painted as traitors or existential threats.—
Marly Berlin,
San Diego Union-Tribune,
16 Sep. 2025
-
The show features reality TV stars and celebrity contestants who must play a game similar to Werewolf or Mafia and figure out who the traitors are among the group.—
Rosa Escandon,
Forbes.com,
15 Sep. 2025
Noun
-
Supporting characters also left their mark, most notably Antonio Fargas as Huggy Bear, the streetwise informant who balanced comic relief with genuine charm.—
Marc Berman,
Forbes.com,
10 Sep. 2025
-
In 1985, Tortora was accused by several alleged ex-mobsters turned informants and state witnesses of being part of a Neapolitan crime syndicate dedicated to drug trafficking.—
Nick Vivarelli,
Variety,
10 Sep. 2025
Noun
-
The insurance crisis is the canary in the coal mine for the climate crisis, and the canary is dying.—
Giulia Carbonaro,
MSNBC Newsweek,
15 Sep. 2025
-
The record number of defaults is a canary in the coal mine for large-scale economic problems, the Consumer Federation of America (CFA) warned.—
Betty Lin-Fisher,
USA Today,
11 Sep. 2025
Noun
-
Below, newlywed and habitual gym rat Jeff Bezos, looking mighty fit on the arm of his telegenic bride Lauren Sanchez, channels his very best Saturday Night Fever Tony Manero, as played by John Travolta.—
Guy Martin,
Forbes.com,
16 Sep. 2025
-
So does his intensity and gym-rat work ethic.—
Mark Zeigler,
San Diego Union-Tribune,
16 Sep. 2025
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Cite this Entry
“Betrayer.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/betrayer. Accessed 22 Sep. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share