Measures to insure accuracy.
Safety devices to insure workers against accidents.
An example of to insure is for Geico Insurance to provide plans for its customers.
Origin of insure
- Middle English ensuren to assure from Old French enseurer possibly variant of assurer assure
From American Heritage Dictionary of the English Language, 5th Edition
- 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.