Meanings of bullheadedness in English

Then he thought it up, and we break through his bullheadedness.

Do you know what you've done with your bullheadedness?

Presson understood better, but could not forgive the bullheadedness that seemed to be wrecking their political plans.

The understaffing of the reconstruction and the lack of post-combat planning wasn't the result merely of Donald Rumsfeld's bullheadedness.

Other was plain, human bullheadedness.

Even now it seems a sort of bullheadedness is chief among the traits necessary to prevail, a trait Isabel had in spades.

Her death, and his humbling experience as an exile from his homeland, have stripped away the bullheadedness that made him frustrating earlier in the season.