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English definition of “portentous”

portentous

adjective uk   /pɔːˈten.təs/ us    /pɔːrˈten.t̬əs/
formal disapproving too serious and trying to be very important: The problem with the book is that it sometimes descends into portentous philosophizing.Showing arrogance and conceitConfidence and self-assuranceBoasting literary Portentous events, statements, or signs are important because they show that something unpleasant is very likely to happen: The report contains numerous portentous references to a future environmental calamity.Predicting things and intuition
portentously
adverb uk   /-li/ formal disapproving us  
(Definition of portentous from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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