ἄριστα
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
Russian (Dvoretsky)
ἄριστα:
I (ᾰρ) adv. наилучшим образом, отлично, превосходно Hom., Her., Plat.
II τά
1) Soph. = ἀριστεῖον 1;
2) средство, лекарство (πρὸς ἀμβλυωπίαν Arst.).