Translation

無礼な / 生意気な / 差し出がましい

Meaning

Impertinent usually describes a question, remark, or person that is rudely bold and disrespectful. It often implies speaking out of place to someone who deserves more respect.

Examples

• 彼は教授に無礼な質問をしました。
  He asked the professor an impertinent question.
• その生意気な返答で面接の雰囲気が悪くなりました。
  Her impertinent reply hurt the tone of the interview.