The Collaborative International Dictionary of English v.0.48:

Valued \Val"ued\ (v[a^]l"[=u]d), a.
   Highly regarded; esteemed; prized; as, a valued contributor;
   a valued friend.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Value \Val"ue\ (v[a^]l"[=u]), v. t. [imp. & p. p. Valued
   (v[a^]l"[=u]d); p. pr. & vb. n. Valuing.]
   [1913 Webster]
   1. To estimate the value, or worth, of; to rate at a certain
      price; to appraise; to reckon with respect to number,
      power, importance, etc.
      [1913 Webster]

            The mind doth value every moment.     --Bacon.
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            The queen is valued thirty thousand strong. --Shak.
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            The king must take it ill,
            That he's so slightly valued in his messenger.
                                                  --Shak.
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            Neither of them valued their promises according to
            rules of honor or integrity.          --Clarendon.
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   2. To rate highly; to have in high esteem; to hold in respect
      and estimation; to appreciate; to prize; as, to value one
      for his works or his virtues.
      [1913 Webster]

            Which of the dukes he values most.    --Shak.
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   3. To raise to estimation; to cause to have value, either
      real or apparent; to enhance in value. [Obs.]
      [1913 Webster]

            Some value themselves to their country by jealousies
            of the crown.                         --Sir W.
                                                  Temple.
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   4. To be worth; to be equal to in value. [Obs.]
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            The peace between the French and us not values
            The cost that did conclude it.        --Shak.
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   Syn: To compute; rate; appraise; esteem; respect; regard;
        estimate; prize; appreciate.
        [1913 Webster]

WordNet (r) 3.0 (2006):

valued
    adj 1: (usually used in combination) having value of a specified
           kind; "triple-valued"
    2: held in great esteem for admirable qualities especially of an
       intrinsic nature; "a valued friend"; "precious memories"
       [syn: valued, precious]

Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "valued":
   ad valorem, admeasured, admired, adored, appraised, appreciated,
   assessed, esteemed, evaluated, gauged, good for, held in respect,
   highly considered, honored, in high esteem, known by measurement,
   mapped, measured, metered, much-admired, plotted, prestigious,
   priced, prized, pro rata, quantified, quantized, rated, respected,
   revered, reverenced, surveyed, triangulated, valuated, valued at,
   venerated, well-considered, well-thought-of, worshiped, worth