caprice
🇺🇸
/kəˈpriːs/
🇬🇧
/kəˈpriːs/
When someone suddenly changes how they feel or act without a clear reason.
Her decision to move to another country seemed like a caprice.
The habit of changing one's mind suddenly or acting in an unexpected way.
His caprice left us all bewildered as he suddenly decided not to sell the house.