tough case

A person who is difficult to work with.

Japanese Meaning

手に負えない人 / 厄介な人 / 付き合いにくい人物

That new manager is a tough case, and collaborating with them requires patience.

あの新しいマネージャーは扱いにくい人で、一緒に仕事をするには忍耐が必要です。

Sense（1）

A person who is difficult to work with.

Due to Mary's ignorance, she was a tough case.

tough cases

（ plural ）