Adheem.com

Adheem is a popular last name in Arabic, Urdu, Hindi and Bangla. It means "The Most Great", and in fact the Quran refers to Allah / God as Al Adheem 11 times.

In the Arabic language the word ‘adheem is used to point to different concepts of greatness, for example a punishment ‘adheem is a great punishment, or a man ‘adheem is a great man.

This is the most useful info I found after a quick search, but any advice/confirmation from a native Arabic speaker would be much appreciated!