G2559–κακόω–kakoō

And God said that his seed would be living in a strange land, and that they would make them servants, and be cruel to them for four hundred years.

κακώσουσιν kakōsousin “they will mistreat [it]”

He, having evil designs against our nation, was cruel to our fathers, and they were forced to put out their young children, so that they might not go on living.

ἐκάκωσεν ekakōsen “he mistreated”

Now, about that time, Herod the king made cruel attacks on the Christians.

κακῶσαί kakōsai “to mistreat”

But those Jews who had not the faith, made the minds of the Gentiles bitter against the brothers.

ἐκάκωσαν ekakōsan “they poisoned”

For I am with you, and no one will make an attack on you to do you damage: for I have a number of people in this town.

κακῶσαί kakōsai “to harm”

Who will do you any damage if you keep your minds fixed on what is good?

κακώσων kakōsōn “will harm”