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counterintelligence

[koun-ter-in-tel-i-juh ns] /ˌkaʊn tər ɪnˈtɛl ɪ dʒəns/
noun
1.
the activity of an intelligence service employed in thwarting the efforts of an enemy's intelligence agents to gather information or commit sabotage.
2.
an organization engaged in counterintelligence.
Origin
1935-1940
1935-40; counter- + intelligence
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for counterintelligence
  • We've been tracking down spies and addressing other counterintelligence threats for nearly a century now.
  • No intelligence element can be completely effective without a strong counterintelligence capability.
British Dictionary definitions for counterintelligence

counterintelligence

/ˌkaʊntərɪnˈtɛlɪdʒəns/
noun
1.
activities designed to frustrate enemy espionage
2.
intelligence collected about enemy espionage
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
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Word Origin and History for counterintelligence
n.

also counter-intelligence, 1940, from counter- + intelligence.

Online Etymology Dictionary, © 2010 Douglas Harper
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Word Value for counterintelligence

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