English to English

noun (n)

• the organic process of growing older and showing the effects of increasing age(noun.process)

  Synonym:
  ageing, aging
  

  source: wordnet30
• the property characteristic of old age(noun.attribute)

  Synonym:
  agedness
  

  source: wordnet30
• The state of growing old; decay by time.(noun)

  source: webster1913