ἐξωμοσία
From LSJ
Νέος πεφυκὼς πολλὰ χρηστὰ μάνθανε → Dum floret aetas, disce, quod scitum decet → In jungem Alter lerne viel, was brauchbar ist
English (LSJ)
ἡ,
A denial on oath that one knows anything of a matter, Ar.Ec.1026, PEleph.34.1 (iii B. C.). II declining an office, D.19.129. III vow, Al.Le.22.18.