Sleeping and Up

Sleeping

Sleeping adjective - Being in a state of suspended consciousness.
Usage example: a roomful of sleeping preschoolers at a daycare center

Up is an antonym for sleeping.

Nearby Words: sleep, sleepy, sleeper, sleepless

Up

Up adjective - Being at a higher level than average.

Sleeping is an antonym for up.
Cite this Source
Up and Sleeping. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/sleeping/up
Sleeping & Up. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/sleeping/up>.
Up or Sleeping. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/sleeping/up.
Google Ngram Viewer shows how "sleeping" and "up" have occurred on timeline