Synonyms and related words :
acute, all-knowing, apperceptive, appercipient, apprehending, apprehensive, argute, astute, aware, cagey, cogent, cognizant, comprehending, conscious, discerning, farseeing, farsighted, foreseeing, foresighted, forethoughted, forethoughtful, heady, incisive, insightful, intelligent, judicious, knowing, knowledgeable, longheaded, longsighted, mindful, omniscient, penetrating, perceptive, percipient, perspicuous, piercing, prehensile, provident, sagacious, savvy, sensible, sharp-sighted, sharp-witted, shrewd, trenchant, understanding, wise