Acute

adj. grave, serious, severe; keen, sharp, sensitive; penetrating, shrewd; less than 90 degrees (Geometry); pointed

Acute may refer to:Acute anglesAcute accentAcute (medical)  Acute (phonetic)The Acute - a band
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adj. sharp, acute, keen, incisive, piercing; poignant, intense; shrill, high-pitched, high; shrewd, discerning; lancinating, severe

adj. acute, severe; sudden, abrupt

(v. t.)
To give an acute sound to; as, he acutes his rising inflection too much.
  

(a.)
Sharp at the end; ending in a sharp point; pointed; -- opposed to blunt or obtuse; as, an acute angle; an acute leaf.
  

(a.)
High, or shrill, in respect to some other sound; -- opposed to grave or low; as, an acute tone or accent.
  

(a.)
Having nice or quick sensibility; susceptible to slight impressions; acting keenly on the senses; sharp; keen; intense; as, a man of acute eyesight, hearing, or feeling; acute pain or pleasure.
  

(a.)
Having nice discernment; perceiving or using minute distinctions; penetrating; clever; shrewd; -- opposed to dull or stupid; as, an acute observer; acute remarks, or reasoning.
  

(a.)
Attended with symptoms of some degree of severity, and coming speedily to a crisis; -- opposed to chronic; as, an acute disease.