n.

1. 多变；反复无常；怪念头[C][U]
   Her decision to wear only black clothes was pure caprice.

   她决定只穿黑衣服完全是忽发奇想。

   the caprices of the weather

   天气的多变

2. 多变的倾向，任性[U]
3. 【音】狂想曲，随想曲[C]

n.

1. a sudden and unaccountable change of mood or behaviour.
2. Music  another term for capriccio.