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Synonyms

informer

American  
[in-fawr-mer] / ɪnˈfɔr mər /

noun

  • informers
    plural
  1. a person who informs against another, especially for money or other reward.

  2. a person who informs or communicates information or news; informant.


informer British  
/ ɪnˈfɔːmə /

noun

  1. a person who informs against someone, esp a criminal

  2. a person who provides information

    he was the President's financial informer

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms

Etymology

Origin of informer

Middle English word dating back to 1350–1400; see origin at inform 1, -er 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

There is something about a healthy personality that feels repelled by a snoop, a snitch, a stool pigeon, an informer.

From Salon ● Sep. 28, 2025

The former Sinn Féin president Gerry Adams has said he was insulted by the BBC's response to his complaint about a Spotlight programme dealing with the murder of informer Denis Donaldson.

From BBC ● May 1, 2025

The former Sinn Féin president believes he was defamed in a 2016 programme which, he claims, was wrong to allege he sanctioned the murder of an informer, Denis Donaldson.

From BBC ● Apr. 29, 2025

He had lived across the street from DeLorean’s home in San Diego County and had turned informer in hopes of leniency.

From Los Angeles Times ● Jul. 24, 2024

At Blackcliff we learn to classify people: civilian, combatant, enemy, ally, informer, defector.

From "An Ember in the Ashes" by Sabaa Tahir

US forces found Maduro because of inside informers, the stepfather said.

From Barron's ● Jan. 19, 2026

It was, Mr. Corera writes, a “dead-end job,” but it offered access to documents that revealed the organization’s dark secrets, such as its labyrinth of informers.

From The Wall Street Journal ● Jan. 6, 2026

Judge Sherrard said there is no evidence that informers were protected after the Kingsmills massacre, the coroner has said.

From BBC ● Apr. 12, 2024

And as in any prison, the wardens select “trusties” among the prisoners for rewards and to serve as informers.

From Slate ● Oct. 16, 2023

If they lost it was because of traitors and informers.

From "Angela's Ashes: A Memoir" by Frank McCourt

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