WordNet (r) 3.0 (2006):

racist
    adj 1: based on racial intolerance; "racist remarks"
    2: discriminatory especially on the basis of race or religion
       [syn: racist, antiblack, anti-Semite(a)]
    n 1: a person with a prejudiced belief that one race is superior
         to others [syn: racist, racialist]

Moby Thesaurus II by Grady Ward, 1.0:

45 Moby Thesaurus words for "racist":
   Anglophobe, Russophobe, antiblack, biased, bigot, chauvinist,
   chauvinistic, colored, doctrinaire, dogmatic, dogmatist, fanatic,
   hater, illiberal, influenced, interested, intolerant, jaundiced,
   jingo, know-nothing, male chauvinist, man-hater, misanthrope,
   misanthropist, misogynist, nonobjective, one-sided, opinionated,
   partial, partisan, pig, prejudiced, prepossessed, sexist,
   superpatriot, superpatriotic, swayed, twisted, ultranationalist,
   undetached, undispassionate, warped, woman-hater, xenophobe,
   xenophobic