ASSIDUOUS Meaning of ASSIDUOUS in English assiduous BrE AmE ə ˈsɪd ju‿əs § -ˈsɪdʒ u‿ AmE ə ˈsɪdʒ u‿əs▷ assiduous|ly li▷ assiduous|ness nəs nɪs Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012