Breadcrumb Home > Thesaurus > C Synonyms of counterintelligence Find synonyms for: Noun 1. counterintelligence, intelligence, intelligence activity, intelligence operation usage: intelligence activities concerned with identifying and counteracting the threat to security posed by hostile intelligence organizations or by individuals engaged in espionage or sabotage or subversion or terrorism WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of counterintelligence (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: felicitous Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language