This reference views the English language from an American perspective (as opposed to the classic OED) and presents its 25,000-30,000 entries accordingly
If something is superb, its quality is very good indeed. There is a superb 18-hole golf course 6 miles away The waters are crystal clear and offer a superb opportunity for swimming. = excellent, outstanding + superbly su·perb·ly The orchestra played superbly
If you say that someone has superb confidence, control, or skill, you mean that they have very great confidence, control, or skill. With superb skill he managed to make a perfect landing. + superbly su·perb·ly his superbly disciplined opponent. extremely good = excellent (superbus , from super; SUPER-)