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Ensure vs. Insure

Categories: Brian Klems' The Writer's Dig, Grammar Rules Tags: grammar tips.
Q: Are “ensure” and “insure” interchangeable?—AnonymousA: Some stylebooks say yes, and some say no. Are you any less confused? These two words are often used in place of each other, but WD’s style separates them.WD—and many other publications—uses “insure” only when referring to financial insurance policies. After signing a contract with a professional baseball team, Jack decided to insure his pitching arm for $1 million.

When the meaning is “to make certain,” WD sticks with “ensure.” It’s my job to ensure that you don’t misuse terms like these.

There are some newspapers and magazines, such as The New York Times and The New Yorker, that still use “insure” in both instances, but it’s fairly archaic to do so. Most publications differentiate the two.

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7 Responses to Ensure vs. Insure

  1. sflaniken says:

    I’m with Bob… either I never noticed, or it’s just been too long!

    I just checked out your Dad’s Blog and got quite a chuckle. Thank you! I’ll go to sleep with a smile on my face!

    Steph

  2. JohnA says:

    I don’t believe the two words are interchangeable, and rarely use insure when ensure will do.

    However, just to confuse the issue – as you chose to use insure as an example – in the UK, insurance refers to the kind of cover that might, or might not, pay out; e.g: car insurance – or Jack’s pitching arm. A policy that will pay out, on death or maturity, is referred to as ASSURANCE.

  3. hiramdavis says:

    I always use ‘insure’ because ‘ensure’ denotes pomposity; an attempt at trendiness. It’s like using ‘grey’, the British spelling, instead of ‘gray’. I believe writers who use ‘grey’ are striving for that same pomposity.

    • JohnA says:

      Safe to assume, then, that you see author E.L.James as extremely pompous.

      FYI, a quote – though probably not original – from the Mighty Red Pen: “I assure you that we have insured the grounds to ensure that we will be protected in case of a lawsuit stemming from an accident.”

    • Yeah, I feel that’s entirely opinion, because I don’t find them interchangeable. I only use insure when I’m speaking about the insurance of something. Ensure more for assuring something intransitive, like JohnA painted.

  4. Bob says:

    Thanks for the info about insure vs ensure, never paid attention.
    Bob Bock

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