ἀκατήχητος
From LSJ
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 not encompassed by sound, Suid.
Greek (Liddell-Scott)
ἀκατήχητος: -ον, ὁ μὴ ὑπὸ ἤχου περιβαλλόμενος, Σουΐδ. ΙΙ. ὁ μὴ διδαχθεὶς τὰς θεμελιώδεις τῆς πίστεως ἀρχάς, Ἐκκλ.