G0208–ἀκυρόω–akuroō

And honour not his father or his mother, he shall be free. Thus have ye made the commandment of God of none effect by your tradition.

ἠκυρώσατε ēkurōsate “you made void”

Making the word of God of none effect through your tradition, which ye have delivered: and many such like things do ye.

ἀκυροῦντες akurountes “making void”

And this I say, that the covenant, that was confirmed before of God in Christ, the law, which was four hundred and thirty years after, cannot disannul, that it should make the promise of none effect.

ἀκυροῖ akuroi “does annul”