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English definition of “stupendous”

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stupendous

adjective uk   /stjuːˈpen.dəs/ us    /stuː-/
very surprising, usually in a pleasing way, especially by being large in amount or size: He ran up stupendous debts through his extravagant lifestyle. Stupendous news! We've won £500,000!
stupendously
adverb uk   /-li/ us  
Our charity appeal has been stupendously successful.
(Definition of stupendous from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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