perspĭcax, ācis, adj. [perspicio],
sharp -sighted , penetrating , acute , perspicacious : perspicax prudentia, old poet ap. Cic. Off. 3, 26, 98: homo (with astutus), Ter. Heaut. 874: ad aliquam rem, id. ib. 370: sequemur et id, quod acutum et perspicax naturā est, Cic. Off. 1, 28, 100: ales oculis perspicax, unguibus pertinax, Ap. Deo Socr. p. 108 Hildebr.; cf. id. Mag. 53: homo perspicacior Lynceo vel Argo et oculus totus, Ap. Met. 2, 23, 8.—Adv.: perspĭcācĭter , acutely , sharp-sightedly , Amm. 26, 6, 1; 29, 1, 38.— Comp. : perspicacius, Consol. Phil. 3 Boëth.; id. Metr. 11, 5.