OBSERVANT

observant. Observant, a. attentive, diligent, submissive, fond

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Ob‐serv″ant (?), a. [[L. observans, -anits, p. pr. of observare: cf. F. observant. See Observe.]] 1. 1. Taking notice; viewing or noticing attentively; watchful; attentive; as, an observant spectator; observant habits.
Wandering from clime to clime observant stray'd. Pope. 2. 2. Submissively attentive; obediently watchful; regardful; mindful; obedient (to); — with of, as, to be observant of rules.
We are told how observant Alexander was of his master Aristotle. Sir K. Digby.