adjective
- Engaged in or accustomed to close observation.
- usage: "caught by a couple of alert cops"; "alert enough to spot the opportunity when it came"; "constantly alert and vigilant, like a sentinel on duty"
- synonyms: alert
- Experiencing or accompanied by sleeplessness."insomniac old people"; "insomniac nights"; "lay sleepless all night"; "twenty watchful, weary, tedious nights- Shakespeare
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). watchful. Retrieved September 20, 2026, from http://smartdefine.org/watchful/definitions/1188068 |
| Chicago | WordNet. 2010. "watchful" http://smartdefine.org/watchful/definitions/1188068 (accessed September 20, 2026). |
| Harvard | WordNet 2010, watchful, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/watchful/definitions/1188068>. |
| MLA | WordNet. "watchful" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/watchful/definitions/1188068> |