insincerity

[Cf. F. insincérité.]
The quality of being insincere; lack of sincerity, or of being in reality what one appears to be; dissimulation; hypocritical; deceitfulness; hollowness; untrustworthiness; as, the insincerity of a professed friend; the insincerity of professions of regard.

What men call policy and knowledge of the world, is commonly no other thing than dissimulation and insincerity.

noun

Lack of sincerity: ambidexterity, artificiality, disingenuousness, phoniness. See honest/dishonest.

The noun has one meaning:

Meaning #1: the quality of not being open or truthful; deceitful or hypocritical
  Synonym: falseness
  Antonym: sincerity (meaning #2)

Quotes:

"What people call insincerity is simply a method by which we can multiply our personalities." - Source Unknown