noun (n)

• intentional deception resulting in injury to another person(noun.act)

  source: wordnet30
• a person who makes deceitful pretenses(noun.person)

  Synonym:
  fake, faker, imposter, impostor, pretender, pseud, pseudo, role player, sham, shammer
  

  source: wordnet30
• something intended to deceive; deliberate trickery intended to gain an advantage(noun.act)

  Synonym:
  dupery, fraudulence, hoax, humbug, put-on
  

  source: wordnet30
• Deception deliberately practiced with a view to gaining an unlawful or unfair advantage; artifice by which the right or interest of another is injured; injurious stratagem; deceit; trick.(noun)

  source: webster1913