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
-
The Ukrainian soldiers began to see Russian civilians as a hindrance — or worse, as potential informers who could give away their positions.—
Ekaterina Bodyagina Nanna Heitmann,
New York Times,
12 Feb. 2025 -
The arrests were part of wide-ranging Establishment attacks on the new generation of pop stars in Britain at the time, done through connivance with informers and a hostile conservative media.—
Bill Wyman,
Vulture,
30 Jan. 2025
Noun
-
The president saw General Milley as a grandstander and a traitor.—
Eric Schmitt,
New York Times,
23 Feb. 2025
-
At the start of the season, host Alan Cumming picked three traitors at the roundtable, and immediately, Sandoval suspected Stause — quickly causing tension between the two.—
Charna Flam,
People.com,
22 Feb. 2025
Noun
-
The witness was in fact facing 30 years in another murder case and went on record as an informant for police to take years off.—
J.M. Banks,
Kansas City Star,
25 Feb. 2025
-
Both the for-profit and nonprofit businesses were founded by Edward Clancy, a businessman and former political consultant who once worked as an FBI informant.—
Jeff McDonald,
San Diego Union-Tribune,
23 Feb. 2025
Noun
-
This situation makes the NIH a golden goose for universities, and also a canary in a coal mine.—
Ian Bogost,
The Atlantic,
24 Jan. 2025
-
In short, the Amazon is the planet’s canary in the coal mine—its health is directly tied to its survival.—
Michael Sheldrick,
Forbes,
19 Jan. 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 3 Mar. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share