Strong G8812πλημμελέω

to make a false note in music : metaphorically to go wrong, offend, err , τι in a thing, (Euripides), etc.; εἴς τινα (Aeschines Orator):—;Pass., πλημμελεῖσθαι ὑπό τινος to be ill-treated by one, (Plato Philosophus) (ML)