The Collaborative International Dictionary of English v.0.48:

Disgust \Dis*gust"\, n. [Cf. OF. desgoust, F. d['e]go[^u]t. See
   Disgust, v. t.]
   Repugnance to what is offensive; aversion or displeasure
   produced by something loathsome; loathing; strong distaste;
   -- said primarily of the sickening opposition felt for
   anything which offends the physical organs of taste; now
   rather of the analogous repugnance excited by anything
   extremely unpleasant to the moral taste or higher
   sensibilities of our nature; as, an act of cruelty may excite
   disgust.
   [1913 Webster]

         The manner of doing is more consequence than the thing
         done, and upon that depends the satisfaction or disgust
         wherewith it is received.                --Locke.
   [1913 Webster]

         In a vulgar hack writer such oddities would have
         excited only disgust.                    --Macaulay.

   Syn: Nausea; loathing; aversion; distaste; dislike;
        disinclination; abomination. See Dislike.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Disgust \Dis*gust"\, v. t. [imp. & p. p. Disgusted; p. pr. &
   vb. n. Disgusting.] [OF. desgouster, F. d['e]go[^u]ter;
   pref. des- (L. dis-) + gouster to taste, F. go[^u]ter, fr. L.
   gustare, fr. gustus taste. See Gust to taste.]
   To provoke disgust or strong distaste in; to cause (any one)
   loathing, as of the stomach; to excite aversion in; to offend
   the moral taste of; -- often with at, with, or by.
   [1913 Webster]

         To disgust him with the world and its vanities.
                                                  --Prescott.
   [1913 Webster]

         [AE]rius is expressly declared . . . to have been
         disgusted at failing.                    --J. H.
                                                  Newman.
   [1913 Webster]

         Alarmed and disgusted by the proceedings of the
         convention.                              --Macaulay.
   [1913 Webster]

WordNet (r) 3.0 (2006):

disgust
    n 1: strong feelings of dislike
    v 1: fill with distaste; "This spoilt food disgusts me" [syn:
         disgust, gross out, revolt, repel]
    2: cause aversion in; offend the moral sense of; "The
       pornographic pictures sickened us" [syn: disgust, revolt,
       nauseate, sicken, churn up]

Moby Thesaurus II by Grady Ward, 1.0:

43 Moby Thesaurus words for "disgust":
   abhorrence, abomination, allergy, animosity, animus, antagonism,
   antipathy, appall, aversion, cold sweat, contempt, creeping flesh,
   dislike, distaste, enmity, fulsomeness, give offense, gross out,
   hate, hatred, horrify, horror, hostility, loathing, mortal horror,
   nausea, nauseate, odium, offend, outrage, put off, reluct, repel,
   repugnance, repulse, repulsion, revolt, revulsion, shock,
   shuddering, sicken, sickness, turn the stomach