Acuteness

Part of speech: noun (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. Violence of a disease, which brings it speedily to a crisis.

Synonyms: Penetration; sagacity; keenness; ingenuity; shrewdness; subtlety; sharp-wittedness.