What does the word sagacious mean?

Usage examples for sagacious

  1. But she was a sagacious woman, and she discerned something more than the fatigue of the journey, something more than grief for her mother, in the girl's depression. – Chippinge Borough by Stanley J. Weyman
  2. She stopped once more- the Don pricked up his sagacious ears. – A Terrible Secret by May Agnes Fleming