πλημμελεῖν
From LSJ
Μί' ἐστὶν ἀρετὴ τἄτοπον φεύγειν ἀεί → Numquam non fugere inepta , et hoc virtutis est → Die einzge Tugend: meiden, was abwegig ist
Greek > English (Woodhouse Verbs Reversed)
(see also πλημμελέω): misbehave, sin, be at fault, cause offence, do wrong, misconduct oneself, strike a jarring note