IPA: /kəˈprɪʃəsnəs/
KK: /kəˈprɪʃəsnəs/
The quality of changing suddenly and unpredictably, often in mood or behavior.
Her capriciousness made it difficult for her friends to know how she would react.
Capriciousness is formed from "capriccio" (from Italian, meaning a sudden change of mind or whim) and the suffix "-ness" (meaning the state or quality of). The word describes the state of being subject to sudden changes in mood or behavior, reflecting whimsicality.
Think of 'capriccio' as a sudden whim or change, which helps you remember that 'capriciousness' refers to the quality of being unpredictable or changeable.