acuteness

n. 1. The quality of being acute or pointed; sharpness; as, the acuteness of an angle. AS [ 1913 Webster ]

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 fine distinctions. [ 1913 Webster ]

Perhaps, also, he felt his professional acuteness interested in bringing it to a successful close. Sir W. Scott. [ 1913 Webster ]

3. Shrillness; high pitch; -- said of sounds. [ 1913 Webster ]

4. (Med.) Violence of a disease, which brings it speedily to a crisis. AS [ 1913 Webster ]

Syn. -- Penetration; sagacity; keenness; ingenuity; shrewdness; subtlety; sharp-wittedness. [ 1913 Webster ]