/ Dictionary / Index I insure: Meaning and Definition of Find definitions for: in•sure Pronunciation: (in-shoor', -shûr'), [key] — v., -sured, -sur•ing. —v.t. to guarantee against loss or harm. to secure indemnity to or on, in case of loss, damage, or death. to issue or procure an insurance policy on or for. ensure (defs. 1–3). —v.i. to issue or procure an insurance policy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: insure (Thesaurus) insurant insured Related Content Daily Word Quiz: sequester Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language