verb (v)

• keep from happening or arising; make impossible(verb.social)

  Example:
  Your role in the projects precludes your involvement in the competitive project.
  

  Synonym:
  forbid, foreclose, forestall, prevent
  

  source: wordnet30
• make impossible, especially beforehand(verb.stative)

  Synonym:
  close out, rule out
  

  source: wordnet30
• To put a barrier before; hence, to shut out; to hinder; to stop; to impede.(verb)

  source: webster1913