noun (n)

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

  Example:
  He threw himself on the mercy of the court.
  

  Synonym:
  clemency, mercifulness
  

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

  Synonym:
  mercifulness
  Antonym:
  mercilessness, unmercifulness
  

  source: wordnet30
• the feeling that motivates compassion(noun.feeling)

  source: wordnet30
• something for which to be thankful(noun.state)

  Example:
  It was a mercy we got out alive.
  

  source: wordnet30
• alleviation of distress; showing great kindness toward the distressed(noun.act)

  Example:
  Distributing food and clothing to the flood victims was an act of mercy.
  

  source: wordnet30
• Forbearance to inflict harm under circumstances of provocation, when one has the power to inflict it; compassionate treatment of an offender or adversary; clemency.(noun)

  source: webster1913