impertinence

/ɪmˈpɜːrtənəns/
noun
  1. Rude or disrespectful behavior or speech, especially toward someone in authority.
    • The student was sent to the principal's office for his impertinence.
    • She answered her grandmother with such impertinence that everyone was shocked.
    • The manager would not tolerate any impertinence from the new employees.
  2. Lack of relevance; something that does not belong or is out of place.
    • His comment about the weather was an impertinence during the serious meeting.
    • The essay was full of impertinences that had nothing to do with the topic.
    • The lawyer objected to the question, calling it an impertinence to the case.