/ Dictionary / Index A all-powerful: Meaning and Definition of Find definitions for: all-pow•er•ful Pronunciation: (ôl'pou'ur-ful), [key] — adj. having or exercising exclusive and unlimited authority; omnipotent. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: all-powerful (Thesaurus) Allport all-purpose Related Content Daily Word Quiz: clairvoyant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language