noun (n)

• the act of binding yourself (intellectually or emotionally) to a course of action(noun.act)

  Synonym:
  commitment, dedication, loyalty
  

  source: wordnet30
• the loyalty that citizens owe to their country (or subjects to their sovereign)(noun.attribute)

  Synonym:
  fealty
  

  source: wordnet30
• The tie or obligation, implied or expressed, which a subject owes to his sovereign or government; the duty of fidelity to one's king, government, or state.(noun)

  source: webster1913