adj.: hardheaded, clever and quick at seeing how to gain an advantage, perceptive, snell, sagaciously, sagacious, politic, pawky, parlous, nimble, knowing, informed, smart, canny, cannily, cagey, brilliant, brainy, astute, acute, subtle, deep, shrewd
Thesaurus
have Eye of, interested, alert, not easily deceived adroit, adroit, accomplished, agile, brisk, prompt, completely sane, active, artful, agreeable, hearty, like a colt, swift, swift, flexile, easily changed to suit new conditions, cogged, subtle, vigorous and hearty, bright, breezy, blessed, blithe, glad, delighted, affected, hallucinatory, knowing, velvet, acquaint, apt, considerate, sensitive, happening in a short time, wily, resourceful, enthusiastic, floppy, squashy, squishy, artful, organized in a clever and complex way, flexible, bouncy rational, appropriate, ample, ample, satisfactory in quantity or quality, meet, adapted, impartial, treating each person, side, etc equally and according to the law, rules, etc, fair, coming, apt, decent, intact, circumstantial, broadside, neutral, impartial, critical, judgematic, able to judge things wisely, valid, timely, apropos, pertinent, relevant, meet, intelligential, correspondence stated, conforming to a principle or standard of procedure, candid, on the right side (=on the side of the angels), cerebral, temperate, sensible, showing careful judgement, religious, competent, cautious, meet, opportune, prompt, Achieve nothing Jiande, dispassionate, proper, honest, instrumental, well-timed