moodiness

/ˈmuːdinəs/
noun
  1. The quality or state of often changing your mood or being unhappy and annoyed without a clear reason.
    • The team's moodiness affected everyone's morale.
    • He apologized for his moodiness and promised to be more cheerful.
    • Her moodiness made it hard for her friends to know how she would react.
Antonyms
What does "moodiness" mean? | whatsthatwordmean | whatsthatwordmean