pigheaded

Viola is so pigheaded, if once she says a thing, she'll stick to it.

The captain is a canny, suspicious, pigheaded old Scottish-man!

She was quite sure that Tappitt was wrong, and thought of him at once as an obstinate, foolish, pigheaded old man.

All Jim Manning really cares about is his own pigheaded sense of race and nationality.

Oh, pigheaded is a better word, at times, if you insist on the truth!