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English definition of “portentous”

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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. 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.
portentously
adverb uk   /-li/ formal disapproving us  
(Definition of portentous from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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