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



    BrE BrE//pɔːˈtentəsnəs//
    ; NAmE NAmE//pɔːrˈtentəsnəs//
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  1. 1(literary) the fact of being important as a sign or a warning of something that is going to happen in the future, especially when it is something unpleasant
  2. 2(formal, disapproving) the quality of being very serious in a way that is intended to impress people synonym pomposity