'Utterly' in the Bible

For the children of Ammon and Moab stood up against the inhabitants of mount Seir, utterly to slay and destroy them: and when they had made an end of the inhabitants of Seir, every one helped to destroy another.

Who was there among all the gods of those nations which my fathers utterly destroyed, that could deliver his people out of my hand, that your God should be able to deliver you out of my hand?