noun (n)

• a fraudulent or duplicitous representation(noun.communication)

  Synonym:
  fraudulence
  

  source: wordnet30
• acting in bad faith; deception by pretending to entertain one set of intentions while acting under the influence of another(noun.act)

  Synonym:
  double-dealing
  

  source: wordnet30
• Doubleness; a twofold state.(noun)

  source: webster1913