مرعوب Root: رعب Hans Wehr Definition مرعوب mar‘ūb frightened, terrified, appalled, afraid Hans Wehr + Lane's Lexicon + Mawrid Search 30,000+ Hans Wehr entries. "The standard Arabic-English dictionary of Modern Standard Arabic" — enhanced with clickable root mapping, verb forms, and noun patterns. 30,000+ Hans Wehr entries Root-based navigation Full text search Lane's Lexicon & Al-Mawrid included Try Now Trusted by researchers at University of Michigan, Duke, Alberta & more Related Words from the Same Root رعب ارعاب راعب مرعب رعد