operate
From LSJ
πολλῶν ὁ καιρὸς γίγνεται διδάσκαλος → the critical moment will turn out to be the teacher of many things
v. intrans.
Produce a result: P. and V. ἐργάζεσθαι. Perform a surgical operation: P. and V. τέμνειν. Carry on warlike operations: P. and V. πολεμεῖν (rare V.).
