形容词

1. 爱发脾气的;脾气乖张的;喜怒无常的
If you say that someone is temperamental, you are criticizing them for not being calm or quiet by nature, but having moods that change often and suddenly.

2. (机器、汽车)老出问题的，易出故障的，性能不稳的
If you describe something such as a machine or car as temperamental, you mean that it often does not work properly.