noun (n)

• the state of being weak in health or body (especially from old age)(noun.state)

  Synonym:
  debility, feebleness, frailness, infirmity, valetudinarianism
  

  source: wordnet30
• moral weakness(noun.attribute)

  Synonym:
  vice
  

  source: wordnet30
• The condition or quality of being frail, physically, mentally, or morally; frailness; infirmity; weakness of resolution; liableness to be deceived or seduced.(noun)

  source: webster1913