acute


From The Collaborative International Dictionary of English v.0.48:

Acute \A*cute"\, a. [L. acutus, p. p. of acuere to sharpen, fr.
   a root ak to be sharp. Cf. Ague, Cute, Edge.]
   1. Sharp at the end; ending in a sharp point; pointed; --
      opposed to blunt or obtuse; as, an acute angle; an
      acute leaf.
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   2. Having nice discernment; perceiving or using minute
      distinctions; penetrating; clever; shrewd; -- opposed to
      dull or stupid; as, an acute observer; acute remarks,
      or reasoning.
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   3. 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.
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   4. High, or shrill, in respect to some other sound; --
      opposed to grave or low; as, an acute tone or accent.
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   5. (Med.) Attended with symptoms of some degree of severity,
      and coming speedily to a crisis; -- opposed to chronic;
      as, an acute disease. AS
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   Acute angle (Geom.), an angle less than a right angle.
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   Syn: Subtile; ingenious; sharp; keen; penetrating; sagacious;
        sharp-witted; shrewd; discerning; discriminating. See
        Subtile.
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.

From The Collaborative International Dictionary of English v.0.48:

Acute \A*cute"\, v. t.
   To give an acute sound to; as, he acutes his rising
   inflection too much. [R.] --Walker.
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