clandestine
clan·des·tine
adjective
1.
conducted with or marked by hidden aims or methods
- “clandestine intelligence operations”
- “cloak-and-dagger activities behind enemy lines”
- “hole-and-corner intrigue”
- “secret missions”
- “a secret agent”
- “secret sales of arms”
- “surreptitious mobilization of troops”
- “an undercover investigation”
- “underground resistance”
Origin
From Latin clandestīnus (“secret, concealed”); compare French clandestin.
Related words
Word family
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.