'Utterly' in the Bible

When Jehu arrived in Samaria, he executed everyone who remained of Ahab's household in Samaria, until he had utterly destroyed Ahab in accordance with the message from the LORD that he spoke to Elijah.

and ordered him, "Open a window that faces east." So he did so. Elisha ordered him, "Shoot!" So he shot. Then Elisha said, "This is the LORD's arrow of victory the victory arrow against Aram, because you will defeat the Arameans at Aphek until you will have utterly finished them off."

Behold, thou hast heard what the kings of Assyria have done to all lands, by destroying them utterly: and shalt thou be delivered?

Truly, O Yahweh, the kings of Assyria have utterly destroyed the nations and their land.