Adjectives

(s)knowing, knowledgeable, learned, lettered, well-educated, well-readhighly educated; having extensive information or understanding“knowing instructors”, “a knowledgeable critic”, “a knowledgeable audience”
(s)knowledgeable, knowingalert and fully informed“a knowing collector of rare books”, “surprisingly knowledgeable about what was going on”
(s)intimate, knowledgeable, versedthoroughly acquainted through study or experience“this girl, so intimate with nature” (W.H.Hudson), “knowledgeable about the technique of painting” (Herbert Read)