Say someone writes a sentence with an error with the case:

  1. the quick brown fox jumps over the lazy dog.

Would you say that:

  1. This sentence contains a case error.


  1. This sentence contains a casing error.

Of course, ideally you would say something more specific, such as:

  1. This sentence's first letter needs to be uppercase.

I'm curious to know the proper use of case while referring to letters (uppercase, lowercase). dictionary.com or merriam-webster.com did not provide any help, so maybe I'm fundamentally wrong about its use?

  • I have never heard the verb case used in the sense of choose the case of a letter, whether as a finite verb or as casing. I doubt whether I would understand what you meant by your sentence with casing error. The one with case error is perfectly understandable. – Colin Fine Aug 8 at 22:20
  • I've never heard either case error or casing error. In my experience, it's always been an error in case. – Jason Bassford Aug 9 at 0:13
  • 3
    Capitalization error might be clearer. – Mike Harris Aug 9 at 13:21

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