STUPENDOUS Meaning of STUPENDOUS in English stupendous BrE AmE stju ˈpend əs ⇨stʃu-, § stu- AmE stu- stju- ▷ stupendous|ly li▷ stupendous|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012