Unclean spirit

Unclean \Un*clean"\ ([u^]n*kl[=e]n"), a. [AS. uncl[=ae]ne. See
   {Unnot}, and {Clean}.]
   1. Not clean; foul; dirty; filthy.
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   2. Ceremonially impure; needing ritual cleansing.
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            He that toucheth the dead body of any man shall be
            unclean seven days.                   --Num. xix.
                                                  11.
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   3. Morally impure. "Adultery of the heart, consisting of
      inordinate and unclean affections." --Perkins.
      [1913 Webster] -- {Un*clean"ly}, adv. -- {Un*clean"ness},
      n.
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   {Unclean animals} (Script.), those which the Israelites were
      forbidden to use for food.

   {Unclean spirit} (Script.), a wicked spirit; a demon. --Mark
      i. 27.
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