Definition of unconventional adjective from the Oxford Advanced American Dictionary

      

    unconventional

     adjective
    adjective
    NAmE//ˌʌnkənˈvɛnʃənl//
     
    (often approving)
     
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  1. 1not following what is done or considered normal or acceptable by most people; different and interesting synonym unorthodox
  2. 2 an unconventional approach to the problem unconventional views The magazine describes him as having unconventional good looks. opposite conventional
unconventionality
 
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NAmE//ˌʌnkənˌvɛnʃəˈnælət̮i//
 
noun [uncountable]
unconventionally
 
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NAmE//ˌʌnkənˈvɛnʃənəli//
 
adverb He dresses unconventionally.
See the Oxford Advanced Learner's Dictionary entry: unconventional