bullheaded

adj

Etymology: From bull + headed.

1. Unreasonably stubborn.

   “John was so bullheaded that he kept driving and refused to stop for directions, even after getting hopelessly lost.”

   ““I know, my dear. I’ve lived with these bullheaded Sartorises for eighty years, and I’ll never give a single ghost of ’em the satisfaction of shedding a tear over him. What did Horace’s message say?””