A spy acting for a country.
- At the same time, they were, and still are, fascinated by the exploits of secret agents and counterspies.
- For the longest time, we were used to our spies being secret agents.
- Did I cut the figure of an imposing secret agent of the intelligence field then?
spy, agent, double agent, counterspy, field agent, undercover agent, operative, plant, infiltrator, mole
North American informal spook
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