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Which spelling is correct, "updatable" or "updateable"?

For example, "The file is not updat(e)able."

By the way, I did go to Google and ref.dic.com for this first, and they both seem to indicate that both spellings are correct. If they are indeed both correct, which is more widely accepted?

55

Google Ngrams shows that updatable is currently much more prevalent:

Updateable vs Updatable

  • 1
    Never heard of Ngrams. That's pretty cool. Thanks. – Nick Rolando Jan 31 '12 at 1:04
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    Of course, Ngram doesn't show the literacy of each group of people... I'd prefer to go with the literate, not the mass. – Bill Kotsias Mar 7 '18 at 6:23
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You'll be in fine company either way. I looked thru some technical books online and found both widely benoted.

For me, updateable is the better choice but, as I said, either one is good.

  • Yeah. As seen in the graph in @Gnawnme's answer, it is used quite a bit! Only half as much as updatable though. – Nick Rolando Jan 31 '12 at 17:27
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    If yu look at an ngram comparing knowledgeable and knowledgable, yu'll get an even bigger gap yet both are acceptable spellings. I like updateable for two reasons: 1. upgrade > upgradeable therefore update > updateable 2. The a is ā (long), the 'e' keeps this ... updatable looks likes up-data-ble to me. We see this (e)able choice in lots of words. There's no right or wrong here ... only a preference – AnWulf Feb 1 '12 at 3:27

protected by tchrist Feb 22 '15 at 0:23

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