folly
From LSJ
ἐὰν ἐκπέσῃ τὸ σιδήριον καὶ αὐτὸς πρόσωπον ἐτάραξεν καὶ δυνάμεις δυναμώσει καὶ περισσεία τοῦ ἀνδρείου σοφία (Ecclesiastes 10:10, LXX version) → If the iron axe fails, and the man has furrowed his brow, he will gather his strength, and the redoubling of his manly vigor will be the wise thing.
English > Greek (Woodhouse)
substantive
P. and V. μωρία, ἡ, ἄνοια, ἡ, ἀμαθία, ἡ, ἀφροσύνη, ἡ, ἀβουλία, ἡ, ἀσυνεσία, ἡ (Eur., Fragment), P. ἠλιθιότης, ἡ, ἀβελτερία, ἡ, εὐήθεια, ἡ, V. εὐηθία, ἡ, Ar. and V. δυσβουλία, ἡ. join with the foolish in folly: V. συνασοφεῖν τοῖς μὴ σοφοῖς (Eur., Phoenissae 394).