\A*cute"ness\, n.
1. The quality of being acute or pointed; sharpness; as, the
   acuteness of an angle.

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.