flippancy

/ˈflɪp ən si/
noun
  1. Lack of proper seriousness or respect; a casual, often disrespectful attitude.
    • The teacher warned the student about his flippancy in class.
    • She apologized for her flippancy when discussing the accident.
    • His flippancy during the serious meeting annoyed everyone.
What does "flippancy" mean? | whatsthatwordmean | whatsthatwordmean