desanimarse
From LSJ
ἢν εὑρίσκῃ πλέω τε καὶ μέζω τὰ ἀδικήματα ἐόντα τῶν ὑπουργημάτων, οὕτω τῷ θυμῷ χρᾶται → it happens that the crimes are greater and more numerous than the services, when one gives way to anger
Spanish > Greek
ἀποκάμνω, διατρέπω, δυσθυμαίνω, δυσαναθετέω, ἀθυμέω, δυσθυμέω, ἀκηδιάω, ἐγκακέω, ἐξαθυμέω