Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
case where
Grammar usage guide and real-world examplesUSAGE SUMMARY
"case where" is a correct and usable part of a sentence in written English.
It can be used to mean a situation or instance of something. For example, "This is an interesting case where our usual methods of problem-solving don't seem to be working."
✓ Grammatically correct
Academia
News & Media
Science
Alternative expressions(18)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
The case where is an i.i.d.i.d
Academia
This is one case where bilingualism works.
News & Media
One case where you show the same demonstration but accidentally.
So that's a case where it's just reverse causality.
Academia
SR becomes a special case where t=0.
Let's look at the case where curl F is zero.
Ultimately it was a case where the unregulated market won.
Academia
So here now is a case where we have aliasing.
This is one case where the evidence is truly unclear.
Academia
We consider first the case where he is risk neutral; we then include the case where he is risk averse.
Academia
We consider the case where buyers and sellers are strategic.
Science
Expert writing Tips
Best practice
Use "case where" to introduce specific examples or situations that illustrate a point.
Common error
While "case where" is generally acceptable, overuse can make writing sound repetitive. Consider varying your sentence structure by using synonyms like "situation in which" or "instance where" to maintain reader engagement.
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "case where" functions as a relative clause introducer, setting the stage for a specific scenario or example. As Ludwig AI confirms, it's used to present circumstances or conditions.
Frequent in
Academia
37%
News & Media
54%
Science
8%
Less common in
Formal & Business
1%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "case where" is a common and grammatically correct phrase used to introduce specific instances or scenarios. Ludwig AI confirms its validity in written English. It functions as a relative clause introducer, most frequently appearing in News & Media and Academic sources. While generally acceptable, varying your sentence structure with alternatives like "situation in which" can enhance clarity and avoid redundancy. Remember to use it to introduce a real situation to your audience and not to overuse it.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
situation in which
Replaces "case" with "situation", focusing on the circumstances.
instance in which
Substitutes "case" with "instance", highlighting a specific occurrence.
circumstance under which
Emphasizes the conditions or factors involved.
scenario where
Uses "scenario" instead of "case", suggesting a hypothetical situation.
example where
Replaces "case" with "example", highlighting a representative situation.
time when
Focuses on a specific point in time when something occurs.
occasion when
Similar to "time when", but emphasizes a particular event.
the event in which
Highlights the happening or occurrence.
a point at which
Emphasizes a specific stage or moment.
a state in which
Focuses on the condition or status of something.
FAQs
How can I use "case where" in a sentence?
You can use "case where" to introduce a specific example or situation. For instance, "This is a "case where" extra caution is necessary."
What are some alternatives to "case where"?
Alternatives include "situation in which", "instance in which", or "circumstance under which".
Is it always appropriate to use "case where" in academic writing?
While generally acceptable, consider more formal alternatives like "situation in which" for academic contexts to enhance precision and avoid repetitiveness.
What's the difference between "case where" and "situation in which"?
"Case where" and "situation in which" are largely interchangeable, but "situation in which" may sound slightly more formal and suitable for academic or professional contexts.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.6/5
Expert rating
Real-world application tested