noun (n)

• an expression of agreement that is not supported by real conviction(noun.communication)

  Synonym:
  lip service
  

  source: wordnet30
• insincerity by virtue of pretending to have qualities or beliefs that you do not really have(noun.attribute)

  source: wordnet30
• The act or practice of a hypocrite; a feigning to be what one is not, or to feel what one does not feel; a dissimulation, or a concealment of one's real character, disposition, or motives; especially, the assuming of false appearance of virtue or religion; a simulation of goodness.(noun)

  source: webster1913