μηδέποτε
From LSJ
εὐκαταφρόνητός ἐστι σιγηρὸς τρόπος → a way of life disposed to silence is contemptible (Menander)
English (LSJ)
Dor. μηδέ-ποκα ib.22.1126.11 (Amphict. Delph., iv B.C.): Adv.:—
A never, with pres. and past tenses, as well as fut., Ar.Pl.1000, Pl.Prt.315b. II μηδέ ποτε and never, Hes.Op.717, 744, A.Pr.1073 (anap.).