/ Dictionary / Index I Insull: Meaning and Definition of Find definitions for: In•sull Pronunciation: (in'sul), [key] 1859–1938, U.S. public utilities magnate, born in England. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. insulin shock insult Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language