ἀφαμαρτάνω
From LSJ
Ἓν οἶδα, ὅτι οὐδὲν οἶδα → I know only one thing, that I know nothing | all I know is that I know nothing.
English (LSJ)
aor. part.
A ἀφαμαρτήσαντος Orph.A.643; Ep. aor. ἀπήμβροτεν Il.15.521, 16.466,477, Pancrat.Oxy.1085.7:—miss one's mark, c. gen., καὶ τοῦ μέν ῥ' ἀφάμαρτεν Il.8.119, etc.; θηρός Pancrat. l.c.: also in Prose, X.HG6.1.15, D.14.13. II lose, be deprived of what one has, σεῦ ἀφαμαρτούσῃ Il.6.411; φίλου ἀπὸ πατρὸς ἁμαρτών 22.505.