ἀψευδέω
From LSJ
καὶ ἐχθροὶ τοῦ ἀνθρώπου οἱ οἰκιακοὶ αὐτοῦ → and a man's foes shall be they of his own household (Micah 7:6, Matthew 10:36)
English (LSJ)
A not to lie, to speak truth, πρός τινα S.Tr.469, Aeschin.2.95: abs., Ar.Fr.751; not to err, Pl.Tht.199b; περί τι Arist.SE165a25. II observe faithfully, IG5(2).343.38,57 (Orchom. Arc., iv B. C.).
German (Pape)
[Seite 421] nicht lügen, Soph. Trach. 469; Ar. bei B. A. 13; neben ἀληθεύω Xen. Cyr. 5, 2, 8; κατ' ἀγοράν Dem. Lept. 9; Harpocr. ἔοικε περὶ τῶν ὠνίων κεῖσθαι. Bei Plat. neben τὰ ὄντα δοξάζειν, sich nicht irren, Theaet. 199 b.