noun
- A very sleepy state.
- usage: "sleepiness causes many driving accidents"
- synonyms: drowsiness, somnolence
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). Sleepiness. Retrieved September 21, 2026, from http://smartdefine.org/sleepiness/definitions/1245187 |
| Chicago | WordNet. 2010. "Sleepiness" http://smartdefine.org/sleepiness/definitions/1245187 (accessed September 21, 2026). |
| Harvard | WordNet 2010, Sleepiness, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/sleepiness/definitions/1245187>. |
| MLA | WordNet. "Sleepiness" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/sleepiness/definitions/1245187> |