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

     

    unchallenged

     adjective
    adjective
    BrE BrE//ʌnˈtʃælɪndʒd//
     
    ; NAmE NAmE//ʌnˈtʃælɪndʒd//
     
     
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  1. 1not doubted; accepted without question; not challenged She could not allow such a claim to go unchallenged. These ideas have remained largely unchallenged for 60 years.
  2. 2(of a ruler or leader, or their position) not opposed by anyone He is in a position of unchallenged authority.
  3. 3without being stopped and asked to explain who you are, what you are doing, etc. I walked into the building unchallenged.
See the Oxford Advanced American Dictionary entry: unchallenged