miscegenate

from WordNet (r) 3.0 (2006)

miscegenate
    v 1: marry or cohabit with a person of another race

from The Collaborative International Dictionary of English v.0.48

miscegenate \miscegenate\ v.
   to marry or cohabit with a person of another race.
   [WordNet 1.5]

from Moby Thesaurus II by Grady Ward, 1.0

22 Moby Thesaurus words for "miscegenate":
      be made one, be spliced, become one, contract matrimony, couple,
      cross, crossbreed, espouse, get hitched, hybridize, interbreed,
      intermarry, interwed, marry, mate, mongrelize, pair off, remarry,
      rewed, take to wife, wed, wive

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