Knowing

alive apprehensive astute awake brainy bright brilliant canny clever cognizant competent conscious conversant cool crack deliberate discerning expert insightful intelligent intended intentional judicious knowledgeable observant perceptive percipient qualified quick quick-witted sagacious sage sensible sentient sharp skillful slick smart sophic sophisticated tuned-in vigilant watchful well-informed wise with-it witting worldly worldly-wise