bullheadedness

noun

The quality or state of being stubbornly unyielding: doggedness, hardheadedness, mulishness, obstinacy, obstinateness, pertinaciousness, pertinacity, perverseness, perversity, pigheadedness, tenaciousness, tenacity, willfulness. See resist/yield.

The noun has one meaning:

Meaning #1: resolute adherence to your own ideas or desires
  Synonyms: stubbornness, obstinacy, obstinance, pigheadedness, self-will