verb (v)

• make less natural or unnatural(verb.change)

  Synonym:
  denaturalise
  

  source: wordnet30
• strip of the rights and duties of citizenship(verb.change)

  Example:
  The former Nazi was denaturalized.
  

  Antonym:
  naturalise, naturalize
  

  source: wordnet30
• To render unnatural; to alienate from nature.(verb)

  source: webster1913