Espionage and Sleeper

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Espionage noun - The secret gathering of information on others.

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Sleeper and espionage are semantically related. In some cases you can use "Sleeper" instead a noun "Espionage".

Sleeper noun - One who sleeps.

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Espionage and sleeper are semantically related. Sometimes you can use "Espionage" instead a noun "Sleeper".

Nearby Words: sleep, sleepy, sleeping

This idea was recycled in a later season when a former KGB sleeper agent still had control over millions of dollars of fund meant to fund Cold War espionage operations in the US.

Source: Hidden in Plain Sight

Cite this Source

Sleeper and Espionage. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/espionage/sleeper

Espionage & Sleeper. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/espionage/sleeper>.

Sleeper or Espionage. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/espionage/sleeper.

Google Ngram Viewer shows how "espionage" and "sleeper" have occurred on timeline