The Collaborative International Dictionary of English v.0.48:

Slander \Slan"der\, v. t. [imp. & p. p. Slandered; p. pr. &
   vb. n. Slandering.]
   1. To defame; to injure by maliciously uttering a false
      report; to tarnish or impair the reputation of by false
      tales maliciously told or propagated; to calumniate.
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            O, do not slander him, for he is kind. --Shak.
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   2. To bring discredit or shame upon by one's acts.
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            Tax not so bad a voice
            To slander music any more than once.  --Shak.
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   Syn: To asperse; defame; calumniate; vilify; malign; belie;
        scandalize; reproach. See Asperse.
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