ἐπιταχύνω
From LSJ
τραχὺς ἐντεῦθεν μελάμπυγός τε τοῖς ἐχθροῖς ἅπασιν → he is a tough black-arse towards his enemies, he is a veritable Heracles towards his enemies
English (LSJ)
A hasten on, urge forward, τινὰ τῆς ὁδοῦ Th.4.47 ; τὸν πόλεμον, τὴν ὁδόν, Plu.Per.29, Hdn.2.11.1 ; τὴν φράσιν making it rapid, Plu.2.1011e ; τὴν σύνθεσιν D.H.Comp.20 ; τῇ Ἑλλάδι τὴν πεπρωμένην Paus.8.51.4:—Pass., ὑπὸ μαστίγων -όμενος Plu.Ant. 68.