noun (n)

• the feeling that motivates compassion(noun.feeling)

  Synonym:
  mercy
  

  source: wordnet30
• a disposition to be kind and forgiving(noun.attribute)

  Example:
  In those days a wife had to depend on the mercifulness of her husband.
  

  Antonym:
  mercilessness, unmercifulness
  

  source: wordnet30
• leniency and compassion shown toward offenders by a person or agency charged with administering justice(noun.act)

  Synonym:
  clemency, mercy
  

  source: wordnet30