IMPIOUS Meaning of IMPIOUS in English im ‧ pi ‧ ous /ˈɪmpiəs/ BrE AmE adjective formal lacking respect for religion or God ⇨ impiety :an impious crime —impiously adverb—impiousness noun [uncountable] Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012