ὀνομάτιον
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 work — just at work until the one who is now constraining it is taken out.
English (LSJ)
τό, Dim. of ὄνομα, Longin.43.2, Arr.Epict.2.23.14 : without dim. sense, POxy.2131.9 (iii A.D.).