σωφρονεῖν
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
Greek > English (Woodhouse Verbs Reversed)
(see also σωφρονέω): be discreet, be moderate, be prudent, be sensible, be sobered, be wise
Lexicon Thucydideum
sapere, to be wise, have good sense, 1.40.2, 1.86.2. 3.44.1. 4.60.1. 4.61.1. 4.64.4. 6.11.6. 6.79.2,
moderatum esse, to be moderate, 6.87.4, 8.24.4.