ἀποκτιννύναι

From LSJ

ἐνίοις τὸ σιγᾶν κρεῖττόν ἐστι τοῦ λαλεῖν → for some people silence is better than words (Menander)

Source

Greek > English (Woodhouse Verbs Reversed)

(see also ἀποκτείνω): kill, murder, slay