τυραννεύεσθαι
From LSJ
τῶν Λειβηθρίων ἀμουσότερος → more uncultured than Leibethrans, more uncultured than the people of Leibethra, lowest degree of mental cultivation
Greek > English (Woodhouse Verbs Reversed)
(see also τυραννεύω): be governed by a despot, be governed by tyrants