λάθρᾳ
From LSJ
ἐν δὲ δικαιοσύνῃ συλλήβδην πᾶσ' ἀρετὴ ἔνι → in justice is all virtue found in sum, in justice is every virtue there is, in justice every virtue is brought together, justice contains in itself all the virtues
German (Pape)
[Seite 6] heimlich, theils absol., Soph. O. R. 386, οὑπιβουλεύων λάθρᾳ, 618, θυραῖος ἦλθον ὡς ὑμᾶς λάθρᾳ, Tr. 530; Ggstz φανερῶς, Plat. Conv. 182 d; Xen. Cyr. 7, 4, 4 u. Folgde; – theils c. gen., λάθρᾳ δὲ μητρὸς καὶ πατρὸς πορεύομαι, Soph. O. R. 787, heimlich von Vater u. Mutter, von ihnen unbemerkt, wie Καδμείων λάθρᾳ, O. C. 355, wie Eur. Andr. 310; λάθρᾳ τῶν στρατιωτῶν πέμπων Xen. An. 1, 3, 8. S. λάθρη.