κατανοεῖν
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
Greek > English (Woodhouse Verbs Reversed)
(see also κατανοέω): mark, notice, observe, understand, grasp in the mind, grasp with the mind