Sunday, September 28, 2025

Should you use ‘insure’ or ‘ensure’?

The words "ensure" and "insure" are easy to mix up. They're just one letter apart, sound alike, and have similar meanings.
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When should you use 'insure' vs. 'ensure'?

The words "ensure" and "insure" are easy to mix up. They're just one letter apart, sound alike, and have similar meanings. Here's how to tell them apart.

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"E nsure" and "insure" have different spellings and meanings, but that wasn't always the case. For years, the terms were no more than spelling variations with the same meaning, and they only developed distinct definitions in the mid-19th century. However, it's still easy to mix up the words, given their similar spellings and pronunciations, so here's what you should know about how they differ.

"Ensure" came about in the late 14th century, derived from the Anglo-French enseurer, meaning "make sure." By the middle of the 15th century, "insure" developed as an alternate spelling. It wasn't until the mid-1800s that some writers suggested giving the terms distinguishable meanings. An entry in an 1871 writing guide suggested "that each of these words … shall become a distinct word, instead of being as now a various spelling." Thus, unique definitions for each word developed. 

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