difficult to control or influence
intractable - stubborn
Somebody or something ‘intractable’ are difficult to manage, direct, or solve. In the case of something intractable, such as a problem, the word connotes great difficulty and frustration. While that is also mostly the case with regards to someone this way, there are some occasions where it might be used in a positive sense, especially in relation to a person who stands their ground and refuses to let others unduly influence them.
I know our boss can be quite intractable at times, but I think that’s a good thing. She has a clear vision and does what’s necessary to implement it.
I’m a little concerned about the intractability of our financial problems. We have tried a number of different solutions, but so far all have failed.
Mike’s intractableness makes him difficult to work with. He always thinks he knows best and dismisses other people’s opinions.