having or showing great skill or knowledge or special training as expected of a professional; "an expert opinion"
25
enlightened
highly educated; having extensive information or understanding; "an enlightened public"; "knowing instructors"; "a knowledgeable critic"; "a knowledgeable audience"
9
experienced
having become knowledgeable or skillful from observation or participation
3
skilled
having or showing or requiring special skill; "only the most skilled gymnasts make an Olympic team"; "a skilled surgeon has many years of training and experience"; "a skilled reconstruction of her damaged elbow"; "a skilled trade"
2
erudite
having or showing profound knowledge; "a learned jurist"; "an erudite professor"