Sleeper and Spook

Sleeper

Sleeper noun - One who sleeps.
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Synonyms for Sleeper

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

Nearby Words: sleep, sleepy, sleeping

Spook

Spook noun - A person who tries secretly to obtain information for one country in the territory of another usually unfriendly country.
Usage example: Russia recalled its spooks after the collapse of the Soviet Union

Sleeper and spook are semantically related. You can use "Sleeper" instead a noun "Spook".

Nearby Words: spooky, spooked, spooking
Cite this Source
Spook and Sleeper. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/sleeper/spook
Sleeper & Spook. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/sleeper/spook>.
Spook or Sleeper. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/sleeper/spook.
Google Ngram Viewer shows how "sleeper" and "spook" have occurred on timeline