"presumptuously"
6 occurrences in KJV
But if a man come presumptuously upon his neighbour, to slay him with guile; thou shalt take him from mine altar, that he may die.
But the soul that doeth ought presumptuously, whether he be born in the land, or a stranger, the same reproacheth the LORD; and that soul shall be cut off from among his people.
So I spake unto you; and ye would not hear, but rebelled against the commandment of the LORD, and went presumptuously up into the hill.