ὀλιγαρχεῖσθαι
From LSJ
τὸν θάνατον τί φοβεῖσθε, τὸν ἡσυχίης γενετῆρα, τὸν παύοντα νόσους καὶ πενίης ὀδύνας → why fear ye death, the parent of repose, who numbs the sense of penury and pain
Greek > English (Woodhouse Verbs Reversed)
(see also ὀλιγαρχέω): be governed by an oligarchy
Lexicon Thucydideum
paucorum imperio uti, to be under the rule of a few, 5.31.6, 8.63.3, 8.63.38.76.1, 8.91.3.