counterintelligence

noun
coun·​ter·​in·​tel·​li·​gence | \ ˌkau̇n-tər-in-ˈte-lə-jən(t)s How to pronounce counterintelligence (audio) \

Definition of counterintelligence

: 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 January 12, 2001 - Hanssen is reassigned from counterintelligence to an obscure office at FBI headquarters. CNN, 14 Apr. 2022 Under the orders of Dumbledore (Jude Law), awkward magizoologist Newt Scamander (Eddie Redmayne) leads a counterintelligence operation against Grindelwald. Brian Truitt, USA TODAY, 13 Apr. 2022 Fletcher moved to San Diego as a Marine in 1997 and served until 2007 as a human intelligence/counterintelligence specialist. Deborah Sullivan Brennan, San Diego Union-Tribune, 3 Apr. 2022 Though the Pinkerton agency received much publicity for its role in preventing Lincoln’s pre-inauguration assassination and wartime counterintelligence efforts, these reports made little mention of Warne’s role, McNary says. Kellie B. Gormly, Smithsonian Magazine, 29 Mar. 2022 Military counterintelligence is mostly about mole-hunting, identifying the sources of leaks. Isaac Chotiner, The New Yorker, 22 Mar. 2022 Green, a 2005 graduate of the U.S. Air Force Academy, served as a mission commander for counterintelligence in Baghdad during Operation Iraqi Freedom. Tyler O'neil, Fox News, 4 May 2022 The National Security Committee, a successor to the Soviet-era KGB, is responsible for counterintelligence, the border guards service and anti-terrorist activities. NBC News, 9 Jan. 2022 The National Security Committee, a successor to the Soviet-era KGB, is responsible for counterintelligence, the border guards service and anti-terrorist activities. Jim Heintz, Anchorage Daily News, 9 Jan. 2022 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'counterintelligence.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of counterintelligence

1940, in the meaning defined above

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Time Traveler for counterintelligence

Time Traveler

The first known use of counterintelligence was in 1940

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Dictionary Entries Near counterintelligence

counterinsurgency

counterintelligence

counterinterpretation

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Statistics for counterintelligence

Last Updated

22 May 2022

Cite this Entry

“Counterintelligence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/counterintelligence. Accessed 25 May. 2022.

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