Observer

Ob*serv"er (?), n. 1. 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.

The observed of all observers.
Shak.

Careful observers may foretell the hour,
By sure prognostic, when to dread a shower.
Swift.

2. One who keeps any law, custom, regulation, rite, etc.; one who conforms to anything in practice. "Diligent observers of old customs." Spenser.

These . . . hearkend unto observers of times.
Deut. xviii. 14.

3. One who fulfills or performs; as, an observer of his promises.

4. A sycophantic follower. [Obs.] Beau. & Fl.