[sa.ga.cious] adj [L sagac-, sagax, fr. sagire to perceive keenly; akin to L sagus prophetic--more at seek] (1607) 1 obs: keen in sense perception
2. a: of keen and farsighted penetration and judgment: discerning "~ judge of character" b: caused by or indicating acute discernment "~ purchase of stock" syn see shrewd -- sa.ga.cious.ly adv -- sa.ga.cious.ness n