Definition of unusually adverb from the Oxford Advanced American Dictionary

      

    unusually

     adverb
    adverb
    NAmE//ʌnˈyuʒuəli//
     
    , NAmE//ʌnˈyuʒəli//
     
     
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  1. 1used before adjectives to emphasize that a particular quality is greater than normal unusually high levels of radiation an unusually cold winter The turnout was unusually low.
  2. 2used to say that a particular situation is not normal or expected Unusually for him, he wore a tie.
See the Oxford Advanced Learner's Dictionary entry: unusually