to upset the apple cart
01
to cause problems, often by ruining or interrupting something that was planned
![to [upset|overturn] the apple cart definition and meaning](https://cdn.langeek.co/photo/46479/original/?type=jpeg "to [upset|overturn] the apple cart definition and meaning")
Idiom
Informal
예시들
Sarah's decision to quit her job and travel the world upset the apple cart for her family, who were relying on her income.
