noun (n)

• the denial and rejection of a doctrine or belief(noun.communication)

  Example:
  Abnegation of the Holy Trinity.
  

  source: wordnet30
• renunciation of your own interests in favor of the interests of others(noun.act)

  Synonym:
  denial, self-abnegation, self-denial, self-renunciation
  

  source: wordnet30
• a denial; a renunciation.(noun)

  source: webster1913