The quality of being acute or pointed; sharpness; as, the acuteness of an angle.
- 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. Shrillness; high pitch; - said of sounds.
- (Med.) Violence of a disease, which brings it speedily to a crisis.
Syn. - Penetration; sagacity; keenness; ingenuity; shrewdness; subtlety; sharp-wittedness.