keenness Copy link Outline 1. săgācĭtas2. subtīlĭtas (fineness of discrimination; ingenuity)3. perspĭcācĭtas (sharp-sightedness)4. ăcerbĭtas (poignancy of distress) • keenness: 1. săgācĭtas: strictly, of scent, s. narium, Cic. N. D. 2, 63, 158: also, of the mind, Cic.: Nep.: v. sagacity, shrewdness. 2. subtīlĭtas (fineness of discrimination; ingenuity): k. of intellect, s. mentis, Plin. 11, 37, 77: v. acuteness, ingenuity. 3. perspĭcācĭtas (sharp-sightedness): Cic. Att. 1, 18, 9 (fig.). 4. ăcerbĭtas (poignancy of distress): to endure the utmost k. of suffering, omnes acerbitates, omnes dolores cruciatusque perferre, Cic. Cat. 4, init. Phr.: such k. of intellect, tanta ingenii acies, Cic. Ac. 2, 39, init. See also sharpness.