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]