counterintelligence

noun

coun·​ter·​in·​tel·​li·​gence ˌkau̇n-tər-in-ˈte-lə-jən(t)s How to pronounce counterintelligence (audio)
: organized activity of an intelligence service designed to block an enemy's sources of information, to deceive the enemy, to prevent sabotage, and to gather political and military information

Examples of counterintelligence in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
The command post will include senior officials from the FBI's counterterrorism, criminal, counterintelligence and cyber divisions. Mike Levine, ABC News, 31 Oct. 2024 The process laid out in the executive order requires a robust review of the due diligence regarding both the vendor and the tool, to see whether any concerns, such as counterintelligence, security, and improper use risks, arise. Vas Panagiotopoulos, WIRED, 21 Oct. 2024 Running the new crackdowns in Russia are the FSB’s counterterrorism unit, its counterintelligence service, and its investigative department. Andrei Soldatov, Foreign Affairs, 27 July 2022 But there is another problem, as well: U.S. and European counterintelligence agencies lack the ability to implement full-scale measures to stop Russian sabotage operations, because to be truly effective, these must include drastic steps that are in practice only feasible under totalitarian regimes. Andrei Soldatov, Foreign Affairs, 9 Aug. 2024 See all Example Sentences for counterintelligence 

Word History

First Known Use

1940, in the meaning defined above

Time Traveler
The first known use of counterintelligence was in 1940

Dictionary Entries Near counterintelligence

Cite this Entry

“Counterintelligence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/counterintelligence. Accessed 15 Nov. 2024.

Kids Definition

counterintelligence

noun
coun·​ter·​in·​tel·​li·​gence ˌkau̇nt-ə-rin-ˈtel-ə-jən(t)s How to pronounce counterintelligence (audio)
: activities of an intelligence service meant to hide the truth from an enemy or to prevent the enemy from learning secret information

More from Merriam-Webster on counterintelligence

Last Updated: - Updated example sentences
Love words? Need even more definitions?

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