'Utterly' in the Bible

But these, as natural brute beasts, made to be taken and destroyed, speak evil of the things that they understand not; and shall utterly perish in their own corruption;

The day of the Lord will come like a thief--it will be a day on which the heavens will pass away with a rushing noise, the elements be destroyed in the fierce heat, and the earth and all the works of man be utterly burnt up.