pig-headed

Từ điển Oxford Advanced Learner 8th

ˌpig-ˈheaded [pig-headed pig-headedness] BrE NAmE adjective
unwilling to change your opinion about sth, in a way that other people think is annoying and unreasonable
Syn: ↑obstinate, Syn: ↑stubborn
•Why are you being so pig-headed about this?
Derived Word: ↑pig-headedness