Sleep
Sleep verb - To be in a state of sleep.
Zonk out and sleep are semantically related. in suspend consciousness topic. In some cases you can use "Zonk out" instead a verb "Sleep".
Zonk out
Zonk out verb - Fall asleep fast, as when one is extremely tired.
Mutual synonyms
Cite this Source
Zonk out and Sleep. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/sleep/zonk_out
Sleep & Zonk out. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/sleep/zonk_out>.
Zonk out or Sleep. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/sleep/zonk_out.
Google Ngram Viewer shows how "sleep" and "zonk out" have occurred on timeline