Some [brutes] show that nice sagacity of smell.
--Cowper.
Natural sagacity improved by generous education. --V.
Knox.
Syn: Penetration; shrewdness; judiciousness.
Usage: {Sagacity}, {Penetration}. Penetration enables us to
enter into the depths of an abstruse subject, to
detect motives, plans, etc. Sagacity adds to
penetration a keen, practical judgment, which enables
one to guard against the designs of others, and to
turn everything to the best possible advantage.