clandestine
Americanadjective
adjective
Other Word Forms
Etymology
Origin of clandestine
First recorded in 1560–70; from Latin clandestīnus, from clamde, clande (unrecorded) (variant of clam “secretly” + -de, adverb particle) + -stīnus (probably after intestīnus “internal”; see intestine)
Explanation
Use the adjective clandestine to describe something that is done in secret, like your clandestine attempts to steal your brother's Halloween candy. Clandestine, an adjective imported from Latin, describes a secret, usually illegal activity. Often these things have to do with political and spy organizations. The CIA might run a clandestine operation to infiltrate terrorist organizations. Words with similar meanings include secret; covert, used especially for military matters; undercover, common in espionage; and surreptitious which emphasizes a person's efforts to keep something secret.
Vocabulary lists containing clandestine
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Even though they never worked together, Highsmith, like Hitchcock, was captivated by the subversive and the clandestine.
From The Wall Street Journal • Jul. 10, 2026
Built from a clandestine audio recording Weist made during the interview, the work occupies a niche between documentary theater, performance art and procedural drama.
From Los Angeles Times • Jul. 7, 2026
But the physical barrier won't be enough to curb clandestine activities, Scott said.
From Barron's • Jun. 9, 2026
He’s even heard rumors, from supporters of his work, that some restaurants in Rio serve capybara meat to certain customers as a clandestine menu item.
From Slate • May 27, 2026
Jefferson defended himself by claiming that his consultations with Bache were not clandestine meetings; he had met with Bache many times, true enough, but he was not, as the Federalists charged, “closeted” with him.
From "Founding Brothers: The Revolutionary Generation" by Joseph J. Ellis
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
