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portentous

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portentous/poɚˈtɛntəs/adjective
portentous
/poɚˈtɛntəs/
adjective
Learner's definition of PORTENTOUS  
[more portentous; most portentous]
formal + literary  : giving a sign or warning that something usually bad or unpleasant is going to happen
formal + disapproving  : trying to seem important, serious, or impressive : pompous

— portentously

adverb
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