Merriam-Webster's Collegiate® Dictionary, 11th Edition
OMNIPOTENT
I. adjective
Etymology: Middle English, from Anglo-French, from Latin omnipotent-, omnipotens, from omni- + potent-, potens potent
Date: 14th century
almighty 1, having virtually unlimited authority or influence , arrant , omnipotently adverb
II. noun
Date: 1600
one who is omnipotent, god 1