noun (n)

• the trait of sincere and steadfast fixity of purpose(noun.attribute)

  Example:
  A man of energy and commitment.
  

  Synonym:
  committedness
  

  source: wordnet30
• the act of binding yourself (intellectually or emotionally) to a course of action(noun.act)

  Example:
  His long commitment to public service.
  

  Synonym:
  allegiance, dedication, loyalty
  

  source: wordnet30
• an engagement by contract involving financial obligation(noun.act)

  Example:
  His business commitments took him to London.
  

  source: wordnet30
• a message that makes a pledge(noun.communication)

  Synonym:
  dedication
  

  source: wordnet30
• the official act of consigning a person to confinement (as in a prison or mental hospital)(noun.act)

  Synonym:
  committal, consignment
  

  source: wordnet30
• The act of committing, or putting in charge, keeping, or trust; consignment; esp., the act of committing to prison.(noun)

  source: webster1913