01 n. The quality of being acute or pointed; sharpness; as, the acuteness of an angle.
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1.
The quality of being acute or pointed; sharpness; as, the acuteness of an angle.
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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.“Perhaps, also, he felt his professional acuteness interested in bringing it to a successful close.” — Sir W. Scott.
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3.
Shrillness; high pitch; -- said of sounds.
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4.
Violence of a disease, which brings it speedily to a crisis.(Med.)
Syn.
Penetration; sagacity; keenness; ingenuity; shrewdness; subtlety; sharp-wittedness.