μεταμέλεσθαι
From LSJ
οὐκ ἐν τῷ πολλῷ τὸ εὖ, ἀλλ' ἐν τῷ εὖ τὸ πολύ → good is not found in plenty but plenty in good, quality matters more than quantity
Greek > English (Woodhouse Verbs Reversed)
(see also: μεταμέλομαι) be penitent, feel remorse
Lexicon Thucydideum
poenitere, to regret 4.27.2, 5.14.2, 5.35.4, 7.50.3, 8.92.10.