2. The faculty of nice discernment or perception; acumen;
keenness; sharpness; sensitiveness; -- applied to the
senses, or the understanding. By acuteness of feeling, we
perceive small objects or slight impressions: by acuteness
of intellect, we discern nice distinctions.
Perhaps, also, he felt his professional acuteness
interested in bringing it to a successful close.
--Sir W.
Scott.
3. Shrillness; high pitch; -- said of sounds.
4. (Med.) Violence of a disease, which brings it speedily to
a crisis.
Syn: Penetration; sagacity; keenness; ingenuity; shrewdness;
subtlety; sharp-wittedness.