def·a·ma·tion /ˌdɛfəˈmeʃən/
  破壞名譽,中傷,誹謗
  Def·a·ma·tion n.  Act of injuring another's reputation by any slanderous communication, written or oral; the wrong of maliciously injuring the good name of another; slander; detraction; calumny; aspersion.
  Note: ☞ In modern usage, written defamation bears the title of libel, and oral defamation that of slander.
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  defamation
       n 1: a malicious attack [syn: calumny, obloquy, traducement,
             hatchet job]
       2: an abusive attack on a person's character or good name [syn:
           aspersion, calumny, slander, denigration]