Definition of unnatural adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//ʌnˈnætʃrəl//
    ; NAmE NAmE//ʌnˈnætʃrəl//
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  1. 1different from what is normal or expected, or from what is generally accepted as being right It seems unnatural for a child to spend so much time alone. There was an unnatural silence and then a scream. unnatural sexual practices He gave an unnatural smile (= that did not seem genuine).
  2. 2different from anything in nature Her leg was bent at an unnatural angle. an unnatural death (= one not from natural causes) opposite natural
  3. Word Familynature nounnatural adjective (unnatural)naturally adverb (unnaturally)
See the Oxford Advanced American Dictionary entry: unnatural