I.sharp -sighted, penetrating, acute, perspicacious: perspicax prudentia, old poet ap. Cic. Off. 3, 26, 98: “homo (with astutus),” Ter. Heaut. 5, 1, 1: “ad aliquam rem,” id. ib. 2, 3, 129: “sequemur et id, quod acutum et perspicax naturā est,” Cic. Off. 1, 28, 100: “ales oculis perspicax, unguibus pertinax,” App. de Deo Soc. p. 108 Hildebr.; cf. id. Mag. 53: “homo perspicacior Lynceo vel Argo et oculus totus,” App. M. 2, p. 124, 38.—Adv.: perspĭcācĭter , acutely, sharp-sightedly, Amm. 26, 6, 1; 29, 1, 38.—Comp.: perspicacius, Consol. Phil. 3 Boëth.; id. Metr. 11, 5.
perspĭcax , ācis, adj. perspicio,