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Print Version

Assure/Ensure/Insure

Tuesday, March 9th, 2010 by Susan Perloff

Three little words — assure, ensure and insure — can wreak havoc in writing. Consider:

My two-volume 1937 Webster’s Universal Dictionary of the English Language, “profusely illustrated, being the unabridged dictionary by Noah Webster, LL.D.,” defines

  • assure as To make certain.
  • ensure as Same as insure.
  • insure as To underwrite.

But today Ensure means an adult nutrition shake. The word makes reasonable people snicker. I suggest you drop it from business writing. Totally.

Write insure when you’re discussing property liability and annual check-ups.
Use assure to mean “put the mind to rest.”

What do you think?

Keywords: Writing tips

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