- (n.) One who keeps any law, custom, regulation, rite, etc.; one who conforms to anything in practice.
- (n.) One who fulfills or performs; as, an observer of his promises.
- (n.) A sycophantic follower.
- (n.) One who observes or pays attention to, anything; especially, one engaged in or trained to habits of, close and exact observation; as, an astronomical observer.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). observer. Retrieved September 20, 2026, from http://smartdefine.org/observer/definitions/2038057 |
| Chicago | Webster's. 2011. "observer" http://smartdefine.org/observer/definitions/2038057 (accessed September 20, 2026). |
| Harvard | Webster's 2011, observer, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/observer/definitions/2038057>. |
| MLA | Webster's. "observer" 27 May 2011. Web. 20 September 2026. <http://smartdefine.org/observer/definitions/2038057> |