IPA: /ˈmuːdɪnəs/
KK: /mudɪnɪs/
The quality of being easily affected by emotions, often changing from happy to sad or vice versa.
Her moodiness made it difficult for her friends to know how to cheer her up.
Moodiness → It is formed from "mood" (from Old English *moda*, meaning state of mind or emotional state) and "-iness" (meaning the quality of being). The word "moodiness" refers to the quality of having varying emotional states or moods.
Think of 'mood' as your emotional state and '-iness' as the quality of that state. This helps you remember that moodiness means the quality of having different moods.