hard nosed

We have a real hard-nosed boss.

我们老板真的很固执。

hard-nosed就是inflexible, a little bit stubborn.

-nosed在英语里很常见，描述一个人的时候很常用，比如说

The long-nosed guy is actually a spy.

那个长鼻子的家伙实际上是个间谍。