unhappy

The little girl was very unhappy because she lost her favorite teddy bear.

(Chinese) 小女孩很不开心，因为她弄丢了她最喜欢的泰迪熊。

He has been unhappy with his current job for a long time and wants to quit.

(Chinese) 他对自己目前的工作不满意已经很久了，想要辞职。