noun (n)

• a contented state of being happy and healthy and prosperous(noun.state)

  Synonym:
  eudaemonia, eudaimonia, upbeat, welfare, well-being
  Antonym:
  ill-being
  

  source: wordnet30
• The state or condition of being well; welfare; happiness; prosperity; as, virtue is essential to the well-being of men or of society.(noun)

  source: webster1913