μετανοεῖν
From LSJ
ὥσπερ λίθοι τε καὶ πλίνθοι καὶ ξύλα καὶ κέραμος, ἀτάκτως μὲν ἐρριμμένα οὐδὲν χρήσιμά ἐστιν → just as stones and bricks, woodwork and tiles, tumbled together in a heap are of no use at all (Xenophon, Memorabilia 3.1.7)
Greek > English (Woodhouse Verbs Reversed)
(see also μετανοέω): alter one's mind, be penitent, change one's mind, change one's views, change-front, feel remorse