obstinacy
🇺🇸
/ˈɑːbstɪnəsi/
🇬🇧
/ˈɒbstɪnəsi/
when someone keeps doing or thinking something in the same way, and does not change even if there are good reasons to do so
His obstinacy made it difficult for us to convince him to take a different route.
他的固执使我们很难说服他走另一条路。