English to English

verb (v)

• prevent the occurrence of; prevent from happening(verb.social)

  Synonym:
  avert, avoid, debar, deflect, fend off, forfend, head off, obviate, stave off, ward off
  

  source: wordnet30
• To hinder; to fend off; to avert; to prevent the approach of; to forbid or prohibit. See Forfend.(verb)

  source: webster1913