Someone or something that is omnipotent has complete power over things or people. The word omnipotence derives from the Latin prefix omni -, meaning "all", and the word potens, meaning "potent" or "powerful". Thus the term means "all-powerful". Master the word "OMNIPOTENT" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource. having total power; able to do anything. Want to learn more? Definition of omnipotent adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.