Clandestine
adjective /klænˈdɛs.tɪn/ — Kept secret, especially for illicit reasons.
Definition
Kept secret or done secretly — especially in connection with something illicit or sensitive. The clandestine has a particular quality: it exists in full knowledge of its own concealment, aware of the social world it must hide from.
Beyond the definition
Clandestine implies something alive with its own necessity — not just secret but actively concealed, held away from the world because the world cannot hold it. It is the adjective of the double life.
Origin & history
From Latin 'clandestinus' (secret, concealed); probably from 'clam' (secretly). The secrecy embedded in the very first syllable.
Example sentences
Illustrative sentences for learning, not verified community posts or sourced quotations.
Their meetings were clandestine not from guilt but from necessity — the circumstances requiring secrecy were not of their making.
A clandestine operation has its own logic: the fewer who know, the more complex the management, the higher the stakes.
She looked up the word 'clandestine' not because she didn't know it but because she wanted to see it written out.
How to use it
This entry uses an adjective. Follow the examples for the nouns it describes and its position in the sentence.
Choose “Clandestine” when the meaning fits your context: Kept secret or done secretly — especially in connection with something illicit or sensitive. The clandestine has a particular quality: it exists in full knowledge of its own concealment, aware of the social world it must hide from.
Synonyms
secret, covert, furtive, concealed, underground
Antonyms
open, public, overt, transparent
Related words
Clandestine vs covert
Clandestine describes actions kept secret to avoid detection, often for illicit reasons. Covert refers to operations or techniques that are deliberately disguised or hidden from public view.
Word in the Wild
See how this word appears in life, language and stories.
Illustrative sentences and imagined stories for learning — not verified sightings, interviews, or sourced quotations.
Fictional scene
Hidden and Sensitive Meeting
An adult waits in the shadowed corner of a moonlit garden for someone.
The awareness of the shadows and the urgency of the meeting underscore the clandestine nature of the act. It is a meeting performed with the full knowledge that it must be kept from the social world.
Image credit: Wordspun · AI-generated conceptual illustration
Questions about this word
What does "Clandestine" mean?
Clandestine is adjective meaning: Kept secret, especially for illicit reasons.. Kept secret or done secretly — especially in connection with something illicit or sensitive. The clandestine has a particular quality: it exists in full knowledge of its own concealment, aware of the social world it must hide from.
Where does the word "Clandestine" come from?
From Latin 'clandestinus' (secret, concealed); probably from 'clam' (secretly). The secrecy embedded in the very first syllable.