ἐπίβουλος
ἔκβαλε πρῶτον ἐκ τοῦ ὀφθαλμοῦ σοῦ τὴν δοκόν, καὶ τότε διαβλέψεις ἐκβαλεῖν τὸ κάρφος ἐκ τοῦ ὀφθαλμοῦ τοῦ ἀδελφοῦ σου → first take the plank out of your own eye, and then you will see clearly to remove the speck from your brother's eye
English (LSJ)
ον,
A plotting against, τοῖς καλοῖς Pl.Smp.203d: abs., treacherous, νόσοι A.Supp.587 (lyr.); of persons, X.Cyr.1.6.27, Thphr.Char.1.7; [θηρίον] (i.e. παῖς) Pl.Lg.808d; δεινὸς καὶ ἐ. a deep designing fellow, Lys.Fr.75.2; γένος Diph. 66.4; πίθηκον, ἐ. κακόν Eub.115; ζῷα ἐ. Arist.HA488b16, 18; τὰ ἐ. τῶν ἀνθρώπων creatures which prey on man, Plu.2.727f; τὰ ἐ. τῆς ψυχῆς Porph.Antr.34; ἐ. ἀνέμων PMag.Leid.V.7.22: Comp. -ότερον, ζῷον Pl.Tht.174d: Sup. -ότατος D.Chr.10.7. Adv. -λως, γίγνεσθαι D.H.11.49, cf. Plu.2.715b, etc.; πράσσειν J.AJ17.5.7.