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.
O, do not slander him, for he is kind. --Shak.
2. To bring discredit or shame upon by one's acts.
Tax not so bad a voice
To slander music any more than once. --Shak.
Syn: To asperse; defame; calumniate; vilify; malign; belie;
scandalize; reproach. See Asperse.