Illicit, while not exactly an everyday word, is far more common than its antonym, licit ("not forbidden by law, permissible"). Perhaps this is a function of our oft-noted fascination with bad behavior and boredom with rectitude. In any case, illicit may be used of behavior that is either unlawful or immoral. These categories frequently overlap, but they are not always synonymous, as some unlawful activities (illicit cigarette smoking) may not be considered immoral, while some immoral activities (an illicit affair) are not illegal. Illicit is occasionally confused with elicit because of the similarity in their pronunciations, but the two words have decidedly different meanings and functions: in contemporary English, elicit is a verb meaning "to get (a response, information, etc.) from someone," while illicit appears solely as an adjective.
The wedding is mounted in traditional Punjabi style, but underneath the formal fanfare simmer dysfunctional-family tensions, deep dark secrets, … and illicit affairs.—David Ansen, Newsweek, 4 Mar. 2002"Thank you, Lieutenant," she said, bowing her head, just as she might in everyday, civilian life, and I felt suddenly illicit in her presence, as though we'd slipped out of sight of our chaperons …—Chang-rae Lee, A Gesture Life, 1999The companies that carry cellular … have adopted a number of monitoring techniques to detect illicit calls …—Paul Wallich, Scientific American, March 1994
He was arrested for selling illicit copies of the software.
She had an illicit affair with her boss.
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Somewhat sharper are the characters who start out already well-versed in the illicit trade.—Angie Han, The Hollywood Reporter, 5 Mar. 2025 While cocaine is the largest drug produced in Colombia, cannabis cultivation still plays a significant role in the country’s illicit drug trade.—Dario Sabaghi, Forbes, 5 Mar. 2025 According to a 2024 press release from America's Poison Centers, calls to poison centers for illicit fentanyl exposure in children under the age of 6 increased from 10 cases in 2016 to 539 in 2023.—Megan Forrester, ABC News, 5 Mar. 2025 And Elliston Berry, who became a victim of an illicit deep fake image produced by a peer.—Time Staff, TIME, 5 Mar. 2025 See All Example Sentences for illicit
Word History
Etymology
Latin illicitus, from in- + licitus lawful — more at licit
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