The Collaborative International Dictionary of English v.0.48:

Dislike \Dis*like"\, v. t. [imp. & p. p. Disliked; p. pr. &
   vb. n. Disliking.]
   1. To regard with dislike or aversion; to disapprove; to
      disrelish.
      [1913 Webster]

            Every nation dislikes an impost.      --Johnson.
      [1913 Webster]

   2. To awaken dislike in; to displease. "Disliking
      countenance." --Marston. "It dislikes me." --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

dislike \dis*like"\, n.
   1. A feeling of positive and usually permanent aversion to
      something unpleasant, uncongenial, or offensive;
      disapprobation; repugnance; displeasure; disfavor; -- the
      opposite of liking or fondness.
      [1913 Webster]

            God's grace . . . gives him continual dislike to
            sin.                                  --Hammond.
      [1913 Webster]

            The hint malevolent, the look oblique,
            The obvious satire, or implied dislike. --Hannah
                                                  More.
      [1913 Webster]

            We have spoken of the dislike of these excellent
            women for Sheridan and Fox.           --J. Morley.
      [1913 Webster]

            His dislike of a particular kind of sensational
            stories.                              --A. W. Ward.
      [1913 Webster]

   2. Discord; dissension. [Obs.] --Fairfax.

   Syn: Distaste; disinclination; disapprobation; disfavor;
        disaffection; displeasure; disrelish; aversion;
        reluctance; repugnance; disgust; antipathy. --
        Dislike, Aversion, Reluctance, Repugnance,
        Disgust, Antipathy. Dislike is the more general
        term, applicable to both persons and things and arising
        either from feeling or judgment. It may mean little more
        than want of positive liking; but antipathy, repugnance,
        disgust, and aversion are more intense phases of
        dislike. Aversion denotes a fixed and habitual dislike;
        as, an aversion to or for business. Reluctance and
        repugnance denote a mental strife or hostility something
        proposed (repugnance being the stronger); as, a
        reluctance to make the necessary sacrifices, and a
        repugnance to the submission required. Disgust is
        repugnance either of taste or moral feeling; as, a
        disgust at gross exhibitions of selfishness. Antipathy
        is primarily an instinctive feeling of dislike of a
        thing, such as most persons feel for a snake. When used
        figuratively, it denotes a correspondent dislike for
        certain persons, modes of acting, etc. Men have an
        aversion to what breaks in upon their habits; a
        reluctance and repugnance to what crosses their will; a
        disgust at what offends their sensibilities; and are
        often governed by antipathies for which they can give no
        good reason.
        [1913 Webster]

WordNet (r) 3.0 (2006):

dislike
    n 1: an inclination to withhold approval from some person or
         group [syn: disfavor, disfavour, dislike,
         disapproval]
    2: a feeling of aversion or antipathy; "my dislike of him was
       instinctive" [ant: liking]
    v 1: have or feel a dislike or distaste for; "I really dislike
         this salesman" [ant: like]

Moby Thesaurus II by Grady Ward, 1.0:

102 Moby Thesaurus words for "dislike":
   Anglophobia, Russophobia, abhor, abhorrence, abominate,
   abomination, angst, anguish, animosity, animus, antagonism,
   anti-Semitism, antipathy, anxiety, aversion, bad books,
   be hostile to, bigotry, boredom, cheerlessness, contemn, contempt,
   deprecation, despise, despitefulness, detest, detestation,
   disaffection, disapproval, disapprove of, discomfort, discomposure,
   discontent, disesteem, disfavor, disgust, disinclination,
   disliking, displeasure, disquiet, disrelish, dissatisfaction,
   distaste, dread, dullness, emptiness, ennui, execrate, execration,
   existential woe, flatness, grimness, hate, hatred, hostility,
   ill will, indisposition, inquietude, joylessness, lack of pleasure,
   loathe, loathing, malaise, malevolence, malice, malignity, mind,
   misandry, misanthropy, mislike, misogyny, nausea, nongratification,
   nonsatisfaction, not care for, odium, painfulness, prejudice,
   race hatred, racism, repugnance, savorlessness, scanner, scorn,
   spite, spitefulness, spleen, staleness, tastelessness, tediousness,
   tedium, turn from, uncomfortableness, unease, uneasiness,
   unhappiness, unpleasure, unsatisfaction, vexation of spirit,
   vials of hate, vials of wrath, xenophobia