informant

noun

in·​for·​mant in-ˈfȯr-mənt How to pronounce informant (audio)
Synonyms of informantnext
: a person who gives information: such as
a
b
: one who supplies cultural or linguistic data in response to interrogation by an investigator

Examples of informant in a Sentence

The police were alerted to the plot by a paid informant. We learned the language with the help of a native informant.
Recent Examples on the Web
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.
The investigation into the ring began in August after law enforcement was tipped off by a confidential informant, one investigator said. Silas Morgan, The Orlando Sentinel, 27 Apr. 2026 Closer to home, agents searched houses across New England, relying heavily on informants. ABC News, 26 Apr. 2026 Federal prosecutors in Alabama secured an 11-count indictment accusing the organization of paying millions of dollars to some of those undercover informants and hiding the real purpose of the payments from its donors. Josh Meyer, USA Today, 25 Apr. 2026 As Ballmer sees it, Sanberg agreed to cooperate in exchange for the league submitting a favorable sentencing letter to Judge Wilson, and thus he shouldn’t be regarded as a credible informant. Michael McCann, Sportico.com, 24 Apr. 2026 See All Example Sentences for informant

Word History

First Known Use

1641, in the meaning defined above

Time Traveler
The first known use of informant was in 1641

Cite this Entry

“Informant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/informant. Accessed 28 Apr. 2026.

Kids Definition

informant

noun
in·​for·​mant in-ˈfȯr-mənt How to pronounce informant (audio)

Legal Definition

informant

noun
in·​for·​mant in-ˈfȯr-mənt How to pronounce informant (audio)
: one who informs against another
specifically : one who makes a practice especially for money of informing police of others' criminal activities

More from Merriam-Webster on informant

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster