οὐ μὴν ἀλλά

From LSJ

τὸ γὰρ μυστήριον ἤδη ἐνεργεῖται τῆς ἀνομίας· μόνον ὁ κατέχων ἄρτι ἕως ἐκ μέσου γένηται. (2Thess 2:7) → For the mystery of lawlessness is already at workjust at work until the one who is now constraining it is taken out.

Source
Click links below for lookup in third sources:
Full diacritics: οὐ μὴν ἀλλά Medium diacritics: οὐ μὴν ἀλλά Low diacritics: ου μην αλλά Capitals: ΟΥ ΜΗΝ ΑΛΛΑ
Transliteration A: ou mḕn allá Transliteration B: ou mēn alla Transliteration C: ou min alla Beta Code: ou)mhnalla

English (LSJ)

A nevertheless, notwithstanding, yet, still, ἀληθῆ μέν ἐστι τὰ πολλά, οὐ μὴν ἀλλ' ἴσως οὐχ ἡδέ' ἀκούειν D.4.38, cf. 1.4, 2.22; so οὐ μὴν ἀλλά… γε, Pl.Grg. 449b, Plt.263b.
II οὐ μὴν ἀλλὰ καί... not only so, but what is more, D.37.23, S.E.M.5.99.

Greek > English (Woodhouse)

not but that

Spanish

sin embargo