Undercover, clandestine, or deceitful operations and stratagems, especially in politics or espionage.
Examples:
- This campaign has been dominated by the dirty tricks of both sides.
Origin: 1940s; originally applied to covert CIA operations.
Undercover, clandestine, or deceitful operations and stratagems, especially in politics or espionage.
Examples:
Origin: 1940s; originally applied to covert CIA operations.