ἐξαμαρτάνειν
From LSJ
ἀπὸ τῶν καρπῶν αὐτῶν ἐπιγνώσεσθε αὐτούς → ye shall know them by their fruits, by their fruits ye shall know them, by their fruits you shall know them, you will know them by their fruit
Greek > English (Woodhouse Verbs Reversed)
(see also ἐξαμαρτάνω): sin, be at fault, be mistaken, be wrong, do wrong, go wrong, make a mistake