petulance

/ˈpɛtʃələns/
noun
  1. The quality of being childishly irritable or bad-tempered; unreasonable impatience or annoyance.
    • She spoke with petulance, snapping at everyone who asked a question.
    • The child's petulance disappeared once she got a snack.
    • His petulance over the delayed flight annoyed the other passengers.