(1):
(n.) One who fulfills or performs; as, an observer of his promises.
(2):
(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.
(3):
(n.) One who keeps any law, custom, regulation, rite, etc.; one who conforms to anything in practice.
(4):
(n.) A sycophantic follower.
A timeless resource no serious scholar should be without. With more than 75,000 entries, if it is a word used in the Bible, you are sure to find it defined here.Wikipedia
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