Sagacious
Etymology
From Latin sagax, "keen-scented, quick to perceive," related to sagire, "to sense keenly." It originally described a hound’s sharp nose; the meaning traveled from a keen sense of smell to a keen sense of judgment.
adjective · /suh-GAY-shus/
Wise and shrewd; good at judgment and foresight.
What it names
Practical wisdom — not book-smarts, but the knack for reading a situation and calling it right.
Example
A sagacious investor, she sold months before anyone else smelled trouble.
Related idea
Astute is sharpness of perception; sagacious adds the weight of good judgment over time.