the quality of being determined to do what you want and refusing to do anything else

His colleagues find his stubbornness difficult to deal with. 他的同事发现他的执拗难以对付。

She is refusing to help out of sheer stubbornness. 出于固执，她拒绝提供帮助。

the quality of being difficult to move, change, or deal with

I don't think you quite appreciate the stubbornness of the problem. 我认为你还不太明白这个问题多么难对付。