operate
From LSJ
ἀμήχανον δὲ παντὸς ἀνδρὸς ἐκμαθεῖν ψυχήν τε καὶ φρόνημα καὶ γνώμην, πρὶν ἂν ἀρχαῖς τε καὶ νόμοισιν ἐντριβὴς φανῇ → hard it is to learn the mind of any mortal or the heart, 'till he be tried in chief authority | it is impossible to know fully any man's character, will, or judgment, until he has been proved by the test of rule and law-giving
English > Greek (Woodhouse)
verb intransitive
produce a result: P. and V. ἐργάζεσθαι.
perform a surgical operation: P. and V. χειρουργεῖν, τέμνειν.
carry on warlike operations: P. and V. πολεμεῖν (rare V.).