The Collaborative International Dictionary of English v.0.48:

Contentment \Con*tent"ment\ (k[o^]n*t[e^]nt"ment), n. [Cf. F.
   contentement. See Content, v. t.]
   1. The state of being contented or satisfied; content.
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            Contentment without external honor is humility.
                                                  --Grew.
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            Godliness with contentment is great gain. --1 Tim.
                                                  vi. 6.
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   2. The act or process of contenting or satisfying; as, the
      contentment of avarice is impossible.
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   3. Gratification; pleasure; satisfaction. [Obs.]
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            At Paris the prince spent one whole day to give his
            mind some contentment in viewing of a famous city.
                                                  --Sir H.
                                                  Wotton.
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WordNet (r) 3.0 (2006):

contentment
    n 1: happiness with one's situation in life [ant: discontent,
         discontentedness, discontentment]