The Collaborative International Dictionary of English v.0.48:

Disesteem \Dis`es*teem"\, n.
   Want of esteem; low estimation, inclining to dislike;
   disfavor; disrepute.
   [1913 Webster]

         Disesteem and contempt of the public affairs. --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Disesteem \Dis`es*teem"\, v. t. [imp. & p. p. Disesteemed; p.
   pr. & vb. n. Disesteeming.]
   1. To feel an absence of esteem for; to regard with disfavor
      or slight contempt; to slight.
      [1913 Webster]

            But if this sacred gift you disesteem. --Denham.
      [1913 Webster]

            Qualities which society does not disesteem. --Ld.
                                                  Lytton.
      [1913 Webster]

   2. To deprive of esteem; to bring into disrepute; to cause to
      be regarded with disfavor. [Obs.]
      [1913 Webster]

            What fables have you vexed, what truth redeemed,
            Antiquities searched, opinions disesteemed? --B.
                                                  Jonson.
      [1913 Webster]

WordNet (r) 3.0 (2006):

disesteem
    n 1: the state in which esteem has been lost [ant: esteem,
         regard, respect]
    v 1: have little or no respect for; hold in contempt [syn:
         disrespect, disesteem] [ant: esteem, prise,
         prize, respect, value]

Moby Thesaurus II by Grady Ward, 1.0:

75 Moby Thesaurus words for "disesteem":
   bad character, bad name, bad odor, bad report, bad reputation,
   bad repute, ban, be disrespectful, be overfamiliar with, blackball,
   blackballing, complaint, deprecate, dim view, disagreement,
   disappointment, disapprobation, disapproval, discommend,
   discontent, discontentedness, discontentment, discountenance,
   discourtesy, discredit, disenchantment, disfavor, disgruntlement,
   dishonor, disillusion, disillusionment, disparage, disparagement,
   displeasure, disrespect, disrespectfulness, dissatisfaction,
   dissent, distaste, evil repute, exclusion, frown, ill fame,
   ill repute, ill-favor, impudence, indignation, insolence,
   irreverence, lack of respect, low estimation, low opinion,
   make free with, not respect, object, objection, opposition,
   opposure, ostracism, poor reputation, protest, public dishonor,
   rank low, rejection, ridicule, shady reputation, shame,
   show disrespect for, take a liberty, take liberties with,
   thumbs-down, treat with disrespect, trifle with, unhappiness,
   unsavory reputation