The Collaborative International Dictionary of English v.0.48:

Contented \Con*tent"ed\, a.
   Content; easy in mind; satisfied; quiet; willing. --
   Con*tent"ed*ly, adv. -- Con*tent"ed*ness, n.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

contentedness \con*tent"ed*ness\ n.
   acceptance of one's situation in life.

   Syn: content.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

contentedness
    n 1: the state of being contented with your situation in life;
         "he relaxed in sleepy contentedness"; "they could read to
         their heart's content" [syn: contentedness, content]