1
as in informant
a person who provides information about another's wrongdoing
who's the sorry rat fink that went squealing to the cops?
Synonyms & Similar Words
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2
as in bastard
a person whose behavior is offensive to others
regrets ever doing business with that rat fink, who cheated him out of gobs of money
Synonyms & Similar Words
Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for rat fink
Noun
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An informant with Talanoa Law and Justice told researchers that drugs impact the areas of the brain that control thinking and emotions.—
Ashley J. DiMella,
FOXNews.com,
5 Feb. 2026 -
Jonathan’s former informant into Teddy’s operation, Roxana (Camila Morrone), has defected to Roper’s side, even going as far as to try and orchestrate Jonathan’s assassination.—
Hunter Ingram,
Variety,
1 Feb. 2026
Noun
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And so every regime invests in having student informers.—
Anne Applebaum,
The Atlantic,
23 Jan. 2026
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Security services also rely on informers to tell them who might be using Starlink, and search internet and social media traffic for signs it has been used.—
David Rising,
Los Angeles Times,
14 Jan. 2026
Noun
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Smarmy jerks can get obscenely wealthy in this country just by managing other people’s money.—
Gilad Edelman,
The Atlantic,
7 Feb. 2026
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The food shies away from the typical — no crab rangoon here — for finger foods that harken to cuisines outside the South Pacific, like Jamaican style jerk shrimp skewers ($18) and salmon ceviche ($16).—
Sean Timberlake,
Sacbee.com,
6 Feb. 2026
Noun
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There are no canaries on the Canary Islands.—
Richard Lederer,
San Diego Union-Tribune,
31 Jan. 2026
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While Chicago is the canary in the coal mine, the legislative resistance to choice affects the entire state.—
The Editorial Board,
Chicago Tribune,
22 Jan. 2026
Noun
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Small dogs aren’t always cheaper — a Chihuahua costs nearly $29,649.—
Cheryl V. Jackson,
IndyStar,
9 Feb. 2026
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The ad oozes cuteness, featuring an adorable baby, a charming house and a faithful family dog.—
Aimee Picchi,
CBS News,
9 Feb. 2026
Noun
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Once an unconscious stool pigeon, always an unconscious stool pigeon.—
Howie Carr,
Boston Herald,
12 Nov. 2025
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Russo turned stool pigeon within a month of his November 2017 arrest for selling a kilo of cocaine to an undercover agent.—
John Annese,
New York Daily News,
26 Feb. 2025
Noun
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Deep cherry red, black, and white come together to create a whimsical world of dice, cards, sad clowns, and a ticking pocketwatch.—
Samantha Brash,
InStyle,
8 Feb. 2026
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These clowns don't even have the courage of their pathetic White supremacist convictions.—
Bill Goodykoontz,
AZCentral.com,
6 Feb. 2026
Noun
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Early mouse and rat experiments suggested that something interesting was going on beyond simple calorie restriction.—
The New York Times News Service Syndicate,
San Diego Union-Tribune,
10 Feb. 2026
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Health advocacy groups such as the Center for Science in the Public Interest have long urged consumers to avoid products containing BHA because some studies have indicated that the chemical causes cancer in rats, mice and hamsters.—
CNN Money,
CNN Money,
10 Feb. 2026
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Cite this Entry
“Rat fink.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/rat%20fink. Accessed 13 Feb. 2026.
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