undercover Meaning, Definition & Usage
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adjective satellite conducted with or marked by hidden aims or methods
hugger-mugger; clandestine; secret; hole-and-corner; surreptitious; underground; cloak-and-dagger; hush-hush.
- 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