Sa‐ga″cious (?), a. [L. sagax, sagacis, akin to sagire to perceive quickly or keenly, and probably to E. seek. See Seek, and cf. Presage.] 1. Of quick sense perceptions; keen-scented; skilled in following a trail.
Sagacious of his quarry from so far. Milton.
2. Hence, of quick intellectual perceptions; of keen penetration and judgment; discerning and judicious; knowing; far-sighted; shrewd; sage; wise; as, a sagacious man; a sagacious remark.
Instinct... makes them, many times, sagacious above our apprehension. Dr. H. More.
Only sagacious heads light on these observations, and reduce them into general propositions. Locke.
Syn. — See Shrewd.
— Sa‐ga″cious‐ly, adv. — Sa‐ga″cious‐ness, n.