English to English

noun (n)

• the trait of being difficult to handle or overcome(noun.attribute)

  Synonym:
  mulishness, obstinacy, obstinance
  

  source: wordnet30
• resolute adherence to your own ideas or desires(noun.attribute)

  Synonym:
  bullheadedness, obstinacy, obstinance, pigheadedness, self-will
  

  source: wordnet30