The Collaborative International Dictionary of English v.0.48:

Fairness \Fair"ness\, n.
   The state of being fair, or free form spots or stains, as of
   the skin; honesty, as of dealing; candor, as of an argument,
   etc.
   [1913 Webster]

WordNet (r) 3.0 (2006):

fairness
    n 1: conformity with rules or standards; "the judge recognized
         the fairness of my claim" [syn: fairness, equity] [ant:
         inequity, unfairness]
    2: ability to make judgments free from discrimination or
       dishonesty [syn: fairness, fair-mindedness, candor,
       candour] [ant: unfairness]
    3: the property of having a naturally light complexion [syn:
       paleness, blondness, fairness]
    4: the quality of being good looking and attractive [syn:
       comeliness, fairness, loveliness, beauteousness]

Moby Thesaurus II by Grady Ward, 1.0:

164 Moby Thesaurus words for "fairness":
   achroma, achromasia, achromatosis, advantageousness, agreeability,
   agreeableness, albescence, albinism, albino, albinoism, anemia,
   ashiness, assured probity, auspiciousness, becomingness,
   beneficialness, benevolence, benignity, blamelessness, blondness,
   bloodlessness, bonniness, cadaverousness, candor, canescence,
   chalkiness, character, chloranemia, class, cleanness, cogency,
   comeliness, creaminess, cricket, deathly hue, deathly pallor,
   decency, desert, detachment, dimness, disinterestedness,
   dispassionateness, dullness, equitability, erectness,
   estimableness, evenhandedness, excellence, expedience,
   exsanguination, fadedness, faintness, fair play, fair shake,
   fair-mindedness, favorableness, fineness, first-rateness,
   frostiness, ghastliness, glaucescence, glaucousness,
   good character, good sportsmanship, goodliness, goodness, grace,
   grizzliness, haggardness, healthiness, helpfulness, high ideals,
   high principles, high-mindedness, hoariness, honesty, honor,
   honorableness, hypochromia, hypochromic anemia, immaculacy,
   impartiality, indifference, integrity, irreproachability,
   irreproachableness, justice, justness, kindness, lactescence,
   leukoderma, lightness, lividness, merit, milkiness,
   moral excellence, moral strength, muddiness, neutrality, niceness,
   nobility, objectivity, paleness, pallidity, pallidness, pallor,
   pastiness, pearliness, personableness, pleasantness, pleasingness,
   principles, prison pallor, probity, profitableness, pureness,
   purity, quality, rectitude, reputability, respectability,
   rewardingness, righteousness, sallowness, sickliness, sickly hue,
   sightliness, silver, silveriness, skillfulness, snowiness,
   soundness, sportsmanlikeness, sportsmanliness, sportsmanship,
   square deal, stainlessness, superiority, the fair thing,
   the handsome thing, the proper thing, unbiasedness,
   unimpeachability, unimpeachableness, unopinionatedness,
   unprejudicedness, unspottedness, uprightness, upstandingness,
   usefulness, validity, value, virtue, virtuousness, vitiligo,
   wanness, weakness, white, white race, whiteness, whitishness,
   wholeness, worth, worthiness