capricious /kəˈprɪʃəs/ adjective Learner's definition of CAPRICIOUS
[more capricious; most capricious] formal
1
: changing often and quickly善变的;反复无常的 especially : often changing suddenly in mood or behavior(尤指情绪或行为)反复无常的,变幻莫测的 2
: not logical or reasonable : based on an idea, desire, etc., that is not possible to predict不合逻辑的;不合情理的
— capriciousness
noun [noncount]