sag-, sagaci-

Having or showing sound judgment and keen perception, wise; farsightedness.

Acuteness of mental discernment; aptitude for investigation or discovery; keenness and soundness of judgement in the estimation of persons and conditions, and in the adaptation of means to ends; penetration, shrewdness.

1. A reference to a person who is considered to be wise, discreet, and judicious.
2. Practically wise, rendered prudent or judicious by experience.
3. With reference to advice, conduct, etc.; characterized by profound wisdom; based on sound judgement.
4. Exhibiting sageness or profound wisdom.
5. A man of profound wisdom; especially, one of those people in ancient history or legend who were traditionally famous as the wisest of mankind; hence, one whose exceptional wisdom entitles him to a degree of veneration. In early use, sometimes with weaker sense, a wise man.