stubbornness

/ˈstʌbərnnəs/
noun
  1. The quality of refusing to change one's mind or actions, even when it would be reasonable to do so.
    • The child's stubbornness about eating vegetables frustrated his parents.
    • Despite the evidence, his stubbornness kept him from admitting he was wrong.
    • Her stubbornness made it impossible to convince her to try a different route.
  2. The quality of being difficult to move, change, or deal with.
    • The stubbornness of the stain required several washes to remove.
    • Farmers struggled with the stubbornness of the rocky soil.
    • The stubbornness of the old lock meant we had to call a locksmith.