From Longman Dictionary of Contemporary Englishstentoriansten‧to‧ri‧an /stenˈtɔːriən/ adjective literary LOUD/NOISYa stentorian voice is very loud and powerful
Examples from the Corpus
stentorian• His stentorian approach and his commanding presence have been influential on the good order of the Assembly.• Perhaps Harriet had been roused by Pringle's stentorian cry.• He frowned and in stentorian fashion summoned a doctor.Origin stentorian (1600-1700) Stentor man with a very loud voice in an ancient Greek story 