Asleep and Watchful

Asleep

Asleep adjective - In a state of sleep.
Usage example: fell asleep at the wheel

Watchful is an antonym for asleep.

Watchful

Watchful adjective - Paying close attention usually for the purpose of anticipating approaching danger or opportunity.
Usage example: the toddler played under the watchful eye of her parents

Asleep is an antonym for watchful.

Cite this Source
Watchful and Asleep. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/asleep/watchful
Asleep & Watchful. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/asleep/watchful>.
Watchful or Asleep. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/asleep/watchful.
Google Ngram Viewer shows how "asleep" and "watchful" have occurred on timeline