These adjectives mean having or showing keen awareness, sound judgment, and often resourcefulness, especially in practical matters. Shrewd suggests a sharp intelligence, hardheadness, and often an intuitive grasp of practical considerations: “He was too shrewd to go along with them upon a road which could lead only to their overthrow” (J.A. Froude). Sagacious connotes prudence, discernment, and farsightedness: “He was observant and thoughtful, and given to asking sagacious questions” (John Galt). Astute suggests shrewdness, especially with regard to one's own interests: An astute tenant always reads the small print in a lease.Perspicacious implies penetration and clear-sightedness: She is much too perspicacious to be taken in by such a spurious argument.
Brady had no doubt Dan had chosen the team; the cheerful man was nonetheless shrewd when he needed to be.
Taran saw Sirian's shrewd manipulations in the convenient location of the army.
Hoadly was shrewd enough not to answer the most brilliant, though comparatively unknown, of his antagonists, William Law.
His shrewd sense of political expediency and his loyalty to constitutional principles saved .him from the error of obstructing the advent and driving into an aati-dynastic attitude politicians who had succeeded in winning popular favor.