This noun denotes exorcists, people who attempt to cast out demons or evil spirits. Acts 19:13 describes itinerant Jewish exorcists who tried to invoke Jesus' name over those with evil spirits. The term identifies professional or habitual practitioners of exorcism. These individuals used formulas and rituals to expel demons, often invoking various divine names. Luke's account shows the danger of mechanically using Jesus' name without authentic relationship: the demons recognize the imposture and the exorcists are overpowered.