POWERFUL Meaning of POWERFUL in English powerful BrE AmE ˈpa ʊ ‿əf ə l ə fʊl AmE \ ˈpaʊ‿ ə rf ə l ə r fʊl ▷ powerful|ly ‿i▷ powerful|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012