The Collaborative International Dictionary of English v.0.48:

Scorn \Scorn\ (sk[^o]rn), n. [OE. scorn, scarn, scharn, OF.
   escarn, escharn, eschar, of German origin; cf. OHG. skern
   mockery, skern[=o]n to mock; but cf. also OF. escorner to
   mock.]
   1. Extreme and lofty contempt; haughty disregard; that
      disdain which springs from the opinion of the utter
      meanness and unworthiness of an object.
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            Scorn at first makes after love the more. --Shak.
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            And wandered backward as in scorn,
            To wait an aeon to be born.           --Emerson.
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   2. An act or expression of extreme contempt.
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            Every sullen frown and bitter scorn
            But fanned the fuel that too fast did burn.
                                                  --Dryden.
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   3. An object of extreme disdain, contempt, or derision.
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            Thou makest us a reproach to our neighbors, a scorn
            and a derision to them that are round about us.
                                                  --Ps. xliv.
                                                  13.
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   To think scorn, to regard as worthy of scorn or contempt;
      to disdain. "He thought scorn to lay hands on Mordecai
      alone." --Esther iii. 6.

   To laugh to scorn, to deride; to make a mock of; to
      ridicule as contemptible.
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   Syn: Contempt; disdain; derision; contumely; despite; slight;
        dishonor; mockery.
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The Collaborative International Dictionary of English v.0.48:

Scorn \Scorn\ (sk[^o]rn), v. i.
   To scoff; to mock; to show contumely, derision, or reproach;
   to act disdainfully.
   [1913 Webster]

         He said mine eyes were black and my hair black,
         And, now I am remembered, scorned at me. --Shak.
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The Collaborative International Dictionary of English v.0.48:

Scorn \Scorn\, v. t. [imp. & p. p. Scorned (sk[^o]rnd); p. pr.
   & vb. n. Scoring.] [OE. scornen, scarnen, schornen, OF.
   escarnir, escharnir. See Scorn, n.]
   1. To hold in extreme contempt; to reject as unworthy of
      regard; to despise; to contemn; to disdain.
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            I scorn thy meat; 't would choke me.  --Shak.
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            This my long sufferance, and my day of grace,
            Those who neglect and scorn shall never taste.
                                                  --Milton.
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            We scorn what is in itself contemptible or
            disgraceful.                          --C. J. Smith.
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   2. To treat with extreme contempt; to make the object of
      insult; to mock; to scoff at; to deride.
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            His fellow, that lay by his bed's side,
            Gan for to laugh, and scorned him full fast.
                                                  --Chaucer.
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            To taunt and scorn you thus opprobriously. --Shak.
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   Syn: To contemn; despise; disdain. See Contemn.
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WordNet (r) 3.0 (2006):

scorn
    n 1: lack of respect accompanied by a feeling of intense
         dislike; "he was held in contempt"; "the despite in which
         outsiders were held is legendary" [syn: contempt,
         disdain, scorn, despite]
    2: open disrespect for a person or thing [syn: contempt,
       scorn]
    v 1: look down on with disdain; "He despises the people he has
         to work for"; "The professor scorns the students who don't
         catch on immediately" [syn: contemn, despise, scorn,
         disdain]
    2: reject with contempt; "She spurned his advances" [syn:
       reject, spurn, freeze off, scorn, pooh-pooh,
       disdain, turn down]

Moby Thesaurus II by Grady Ward, 1.0:

87 Moby Thesaurus words for "scorn":
   abhor, airs, arrogance, be above, be contemptuous of,
   care nothing for, clannishness, cliquishness, contemn, contempt,
   contemptuousness, contumely, deprecation, deride, derision,
   despisal, despise, despite, disavow, disdain, disdainfulness,
   dismissal, disown, disparage, disparagement, disprize, disregard,
   dump on, exclusiveness, feel contempt for, feel superior to, flout,
   flouting, fuss, gibing, hauteur, hold beneath one, hold cheap,
   hold in contempt, hold in derision, ignore, insult, jeer at,
   jeering, laugh at, laugh to scorn, look, look down upon,
   make fun of, misprize, mockery, pick and choose, poke fun at,
   pooh-pooh, put down, rank low, rebuff, reject, rejection, ridicule,
   scoff at, scoffing, scornfulness, scout, set at defiance,
   set at naught, shun, slight, slight over, sneer at, sneering,
   sneeze at, sniff at, sniffiness, snobbishness, snootiness,
   snort at, snottiness, snub, sovereign contempt, spurn,
   superciliousness, taunt, taunting, think nothing of, toploftiness,
   treat with contempt