- (n.) Dull; lazy; heavy; sluggish.
- (n.) Drowsy; inclined to or overcome by, sleep.
- (n.) Tending to induce sleep; soporiferous; somniferous; as, a sleepy drink or potion.
- (n.) Characterized by an absence of watchfulness; as, sleepy security.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). sleepy. Retrieved September 24, 2026, from http://smartdefine.org/sleepy/definitions/2062876 |
| Chicago | Webster's. 2011. "sleepy" http://smartdefine.org/sleepy/definitions/2062876 (accessed September 24, 2026). |
| Harvard | Webster's 2011, sleepy, Smart Define, viewed 24 September, 2026, <http://smartdefine.org/sleepy/definitions/2062876>. |
| MLA | Webster's. "sleepy" 28 May 2011. Web. 24 September 2026. <http://smartdefine.org/sleepy/definitions/2062876> |