κατασκοπή
From LSJ
συνετῶν μὲν ἀνδρῶν, πρὶν γενέσθαι τὰ δυσχερῆ, προνοῆσαι ὅπως μὴ γένηται· ἀνδρείων δέ, γενόμενα εὖ θέσθαι → it is the part of prudent men, before difficulties arise, to provide against their arising; and of courageous men to deal with them when they have arisen
English (LSJ)
ἡ,
A viewing closely, spying, πέμπειν τινὰ εἰς κατασκοπήν S.Ph.45; μολεῖν εἰς κ. E.Ba.838; ἐπὶ κατασκοπήν X.Cyr.6.2.9, cf. HG1.4.11, Arist.Ath. Fr.4, Plb.3.95.8; ἐπὶ-σκοπῇ τῶν πραγμάτων Aeschin.2.28; κατασκοπῆς ἕνεκα X.An.7.4.13; ἔχειν κ. Plu.Fab.12; κατασκοπαῖς χρωμένους Th.6.34; ἐς τὴν κ. τῶν χρημάτων to inspect the money, ib.46.