τυραννικῶς
From LSJ
ἡγούμενος τῶν ἡδονῶν ἀλλ' οὐκ ἀγόμενος ὑπ' αὐτῶν → of his pleasures he was the master and not their servant
Russian (Dvoretsky)
τῠραννικῶς: тираннически, самовластно Plat., Arst.: βασιλικῶς, ἀλλὰ μὴ τ. ἐπιστατεῖν τινος Isocr. управлять кем-л. как царь, а не как тиранн.
English (Woodhouse)
(see also: τυραννικός) despotically, tyrannically