preclusive

from WordNet (r) 3.0 (2006)

preclusive
    adj 1: made impossible [syn: {preclusive}, {obviating(a)}]

from The Collaborative International Dictionary of English v.0.48

Preclusive \Pre*clu"sive\, a.
   Shutting out; precluding, or tending to preclude; hindering.
   -- {Pre*clu"sive*ly}, adv.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

36 Moby Thesaurus words for "preclusive":
      deterrent, deterring, discouraging, ethnocentric, exceptional,
      excluding, exclusive, exclusory, forbidding, forestalling,
      inadmissible, inhibitive, inhibitory, insular, interdictive,
      interdictory, narrow, parochial, prescriptive, preventative,
      preventive, prohibiting, prohibitive, prohibitory, prophylactic,
      proscriptive, repressive, restrictive, seclusive, segregative,
      select, selective, separative, snobbish, suppressive, xenophobic