Definition of insincerity in English:

insincerity

nouninsincerities

mass noun
  • The quality of not expressing genuine feelings.

    ‘he had no patience for anything that smacked of insincerity or hypocrisy’
    count noun ‘the insincerities of social life’

Pronunciation

insincerity

/ɪnsɪnˈsɛrɪti/