Definition of fierceness noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈfɪəsnəs//
    ; NAmE NAmE//ˈfɪrsnəs//
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  1. 1the quality of being angry and aggressive in a way that is frightening the fierceness of a bear
  2. 2the quality of showing strong feelings and involving a lot of activity or determination the fierceness of the competition
  3. 3the quality of being very strong in a way that could cause damage the fierceness of the flames