adjective
- Deficient in alertness or activity.
- usage: "bullfrogs became lethargic with the first cold nights"
- synonyms: unenrgetic
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). lethargic. Retrieved September 22, 2026, from http://smartdefine.org/lethargic/definitions/1177496 |
| Chicago | WordNet. 2010. "lethargic" http://smartdefine.org/lethargic/definitions/1177496 (accessed September 22, 2026). |
| Harvard | WordNet 2010, lethargic, Smart Define, viewed 22 September, 2026, <http://smartdefine.org/lethargic/definitions/1177496>. |
| MLA | WordNet. "lethargic" 23 October 2010. Web. 22 September 2026. <http://smartdefine.org/lethargic/definitions/1177496> |