Sound asleep and Sleeping

Sound asleep

Sound asleep adjective - Sleeping deeply.
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Synonyms for Sound asleep

Sleeping and sound asleep are semantically related. In some cases you can use "Sleeping" instead the phrase "Sound asleep" as an adjective or an adverb.

Sleeping

Sleeping adjective - Being in a state of suspended consciousness.

Sound asleep and sleeping are semantically related. You can use "Sound asleep" instead the word "Sleeping" as an adjective or an adverb.

Nearby Words: sleep, sleepy, sleeper, sleepless
Cite this Source
Sleeping and Sound asleep. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/sound_asleep/sleeping
Sound asleep & Sleeping. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/sound_asleep/sleeping>.
Sleeping or Sound asleep. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/sound_asleep/sleeping.
Google Ngram Viewer shows how "sound asleep" and "sleeping" have occurred on timeline