 The Greek verb ἐποπτεύω ("epopteuo") has the basic meaning of "to watch, oversee" but also "to become an ἐπόπτης ("epoptes", "initiate," feminine "epoptis" and plural "epoptides"), the highest grade of initiate at the Eleusinian mysteries.Köves-Zulauf argued that Soranus's "Epoptides" was an extended treatment of mystery religions, and the title is sometimes translated into German as "Mystikerinen.