acuteness

noun5

1. •
   The quality of being acute or pointed.
2. •
   Of the senses or feelings: the faculty of precise discernment or perception; sensitiveness.

   • By acuteness of feeling, we perceive small objects or slight impressions.
   • By acuteness of intellect, we discern nice distinctions.
3. •
   Shrewdness, quickness of mind.
4. •
   Violence of a disease, which brings it speedily to a crisis.
5. •
   Of sounds: shrillness; high pitch.