noun (n)

• a state of decay usually accompanied by an offensive odor(noun.state)

  Synonym:
  rot
  

  source: wordnet30
• (biology) the process of decay caused by bacterial or fungal action(noun.process)

  Synonym:
  decomposition, rot, rotting
  

  source: wordnet30
• moral perversion; impairment of virtue and moral principles(noun.attribute)

  Example:
  Rome had fallen into moral putrefaction.
  

  Synonym:
  corruption, degeneracy, depravation, depravity
  

  source: wordnet30
• The act or the process of putrefying; the offensive decay of albuminous or other matter.(noun)

  source: webster1913