English to English

noun (n)

• easing the severity of a pain or a disease without removing the cause(noun.act)

  source: wordnet30
• to act in such a way as to cause an offense to seem less serious(noun.act)

  Synonym:
  extenuation, mitigation
  

  source: wordnet30
• The act of palliating, or state of being palliated; extenuation; excuse; as, the palliation of faults, offenses, vices.(noun)

  source: webster1913