/ Dictionary / Index E ensure: Meaning and Definition of Find definitions for: en•sure Pronunciation: (en-shoor', -shûr'), [key] — -sured, -sur•ing. to secure or guarantee: This letter will ensure you a hearing. to make sure or certain: measures to ensure the success of an undertaking. to make secure or safe, as from harm. insure (defs. 1–3). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: ensure (Thesaurus) en suite* enswathe Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language