ἐὰν μή

From LSJ

Ὡς πάντα τιμῆς ἐστι πλὴν τρόπου κακοῦ → Ut cuncta nunc sunt cara, nisi mores mali → Charakterlosigkeit allein bleibt ohne Ehr

Menander, Monostichoi, 559

English (Strong)

i.e. ἐάν and μή; if not, i.e. unless: X before, but, except, if, no, (if, + whosoever) not.