noun (n)

• a false accusation of an offense or a malicious misrepresentation of someone's words or actions(noun.communication)

  Synonym:
  calumniation, calumny, hatchet job, obloquy, traducement
  

  source: wordnet30
• an abusive attack on a person's character or good name(noun.act)

  Synonym:
  aspersion, calumny, denigration, slander
  

  source: wordnet30
• 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.(noun)

  source: webster1913