1 often changing moods in a way that people cannot predict 心情多变的；喜怒无常的: You never know where you are with Andy because he's so moody. 你根本摸不透安迪，因为他喜怒无常。

2 bad-tempered or unhappy, often for no particular reason 脾气坏的，闷闷不乐的（往往是无缘无故的） ➔moodily adv ➔moodiness noun [U]