Secret agent noun – A person secretly employed in espionage for a government. Spy is a synonym for secret agent in person topic. In some cases you can use "Spy" instead a noun phrase "Secret agent", when it comes to topics like informer, stool pigeon.
Spy noun – (military) a secret agent hired by a state to obtain information about its enemies or by a business to obtain industrial secrets from competitors. Secret agent is a synonym for spy in person topic. You can use "Secret agent" instead a noun "Spy", if it concerns topics such as informer, stool pigeon, undercover agent. popular alternative Nearby Word: spying