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counterintelligence
[ koun-ter-in-tel-i-juhns ]
/ ˌkaʊn tər ɪnˈtɛl ɪ dʒəns /
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noun
the activity of an intelligence service employed in thwarting the efforts of an enemy's intelligence agents to gather information or commit sabotage. Abbreviation: CI
an organization engaged in counterintelligence. Abbreviation: CI
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Origin of counterintelligence
First recorded in 1935–40; counter- + intelligence
Words nearby counterintelligence
counterfoil, counterforce, counterfort, counterglow, counterinsurgency, counterintelligence, counterintuition, counterintuitive, counter-ion, counterirritant, counterjumper
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use counterintelligence in a sentence
British Dictionary definitions for counterintelligence
counterintelligence
/ (ˌkaʊntərɪnˈtɛlɪdʒəns) /
noun
activities designed to frustrate enemy espionage
intelligence collected about enemy espionage
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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