Insure Definition
ĭn-sho͝or
insured, insures, insuring
verb
insured, insures, insuring
To give or take out insurance.
Webster's New World
To contract to be paid or to pay money in the case of loss of (life, property, etc.); take out or issue insurance on (something or someone)
Webster's New World
To acquire or have insurance for.
Insured herself against losses; insured his car for theft.
American Heritage
To make sure or certain; guarantee; ensure.
Measures to insure accuracy.
Webster's New World
To make safe; protect; ensure.
Safety devices to insure workers against accidents.
Webster's New World
Origin of Insure
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Recorded since c.1440, as a variant of Middle English ensuren (from Anglo-Norman enseurer, itself from en- "make" + Old French seür "sure", probably influenced by Old French asseürer "to assure"); took on its particular sense of "make safe against loss by payment of premiums" in 1635, replacing assure.
From Wiktionary
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Middle English ensuren to assure from Old French enseurer possibly variant of assurer assure
From American Heritage Dictionary of the English Language, 5th Edition
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