ἐπικρατής
From LSJ
Οὐκ ἔστι σιγᾶν αἰσχρόν, ἀλλ' εἰκῆ λαλεῖν → Silere non est turpe, sed frustra loqui → nicht Schweigen schändet, sondern Schwätzen auf gut Glück
English (LSJ)
ές,
A master of a thing: only Comp. -έστερος, τῇ μάχῃ superior in... Th.6.88; -έστερός τινος γενόμενος having the upper hand of . ., D.C.55.30; τὸ -έστερον φέρειν Memn.34.3; κατὰ τὸ -έστερον with success, D.S.37.2.—Hom. only in Adv. -τέως with overwhelming might, impetuously, Il.16.67,81,23.863 (never in Od.); so Hes.Sc.321, A.R.1.367, etc.