SHREWD

adj. clever, smart, astute, cunning, canny, acute, sharp, keen-minded, keen, quick-witted, crafty, artful, manipulative, calculating, calculated, foxy, sly, wily, perceptive, percipient, perspicacious, discerning, wise, sage, sagacious, long-headed, intelligent, ingenious, Daedalian, inventive, resourceful He is a shrewd politician, very good at knowing exactly what people want to hear him say