I thought it was "case-insensitive" but there are very few sources. If it's correct, what is it's adverb? As a non-native english speaker i would say it's "case-insensitively" but that sounds odd and i haven't found any sources but my own post on stackoverflow:

This will compare case insensitively:

bool equals = x.Equals(y , StringComparison.OrdinalIgnoreCase);

Case-insensitive is indeed the correct antonym. That's the normal tech term. Evidently, it can be used with or without the hyphen.


To cause a case-sensitive comparison of nonbinary strings to be case insensitive, use COLLATE to name a case-insensitive collation.


This example shows that VERSION() returns a string that has a case-insensitive collation, so comparisons are case insensitive:


As for the adverb, to me case-insensitively sound a bit awkward, so I would prefer in a case-insensitive manner:

You can configure the property value comparisons in query search conditions to be performed in a case-insensitive manner.


Or, you can simply do without an adverb or adverbial phrase and write something like:

This will perform a case-insensitive comparison.

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  • Thanks for your assistance guys. I will accept this answer. Thanks also for the tip to by-pass the suspect adverb with "perform a case-insensitive comparison". – Tim Schmelter Oct 15 '15 at 9:13
  • No problem, Tim, glad it works for you. – A.P. Oct 15 '15 at 9:22

The opposite would be case-insensitive and even Wikipedia say's so.


But, I must agree that case-insensitively sounds odd and I have personally never used it and have never heard anyone else doing so either.

Another thing I found is that the site Word Hippo says it did not find an opposite term to to case-sensitive. http://www.wordhippo.com/what-is/the-opposite-of/case-sensitive.html

So, in the end it comes down to how you want to use it. You can always say, Not Case sensitive.

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  • You link takes me to a Wikipedia article with the warning "This article needs additional citations for verification." The claim that the opposite of case-sensitive is case-insensitive is unsupported. A statement that the google's searches are "case-insensitive" is footnoted, but the link goes to a page that does not use the term. Both you and Wikipedia may be right, but Wikipedia is usually just a starting point. – deadrat Oct 15 '15 at 8:58
  • The downvote wasn't mine, but you could clarify that Word Hippo doesn't "say" anything other than it failed to find a match for your query. – JHCL Oct 15 '15 at 8:59
  • @deadrat You need citations? I am just showing that the word exisits. Nothing else. And, as you said wiki is just the starting point. Isn't that exactly what i have done and shown? – Durga Swaroop Oct 15 '15 at 9:04
  • @DurgaSwaroop I take your point on existence, and as well on what is sometimes an obsession around here about citations. But the question was two-fold and includes the query about the term that's the opposite of "case-sensitive." My warning about Wikipedia stands. And, but the way, I am not the downvoter. – deadrat Oct 15 '15 at 9:12

Case-sensitive is an adjective for stating that the comparison will recognize (or be sensitive to) character capitalization.

Since the antonym of sensitive is insensitive, it makes sense to keep the object (case) unchanged and reverse the behavior to insensitive. (No supported reference other than common-sense interpretation :P.)

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  • Common sense turns out to be a weak guide. For instance, it might lead you to smoke around containers marked "inflammable." By the way, I am not the downvoter. – deadrat Oct 15 '15 at 9:17
  • @deadrat sometimes it is easier to understand the origin using common sense.. Being a programmer,I can guarantee "this doesn't always helps!! " :P for instance String is common word for a thread but for a programmer its a "sequence of characters"..!!! – Nikita Shrivastava Oct 15 '15 at 9:22

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