noun (n)

• the act of placating and overcoming distrust and animosity(noun.act)

  Synonym:
  conciliation, placation
  

  source: wordnet30
• the act of atoning for sin or wrongdoing (especially appeasing a deity)(noun.act)

  Synonym:
  atonement, expiation
  

  source: wordnet30
• The act of appeasing the wrath and conciliating the favor of an offended person; the act of making propitious.(noun)

  source: webster1913