obstinacy
US /ˈɑːb.stə.nə.si/
UK /ˈɒb.stɪ.nə.si/
名詞
頑固
the quality of being unreasonably determined, especially to act in a particular way and not to change at all, despite what anyone else says:
例:
•
I stayed until the end out of sheer obstinacy.