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
a special instance
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "a special instance" is correct and usable in written English.
It can be used to refer to a unique or particular case that stands out from others in a given context. Example: "In this study, we will examine a special instance of social behavior that deviates from the norm."
✓ Grammatically correct
Science
News & Media
Encyclopedias
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
25 human-written examples
But "The Doctors" has a special instance here.
News & Media
A special instance of diffraction, often referred to as the Tyndall effect (after its discoverer, the 19th-century British physicist John Tyndall), results in the presence of blue colours in many animals.
Encyclopedias
For OB OBp → p) →(OBOBp → OBp) is just a special instance of OB-K.
Science
A special instance of the Fourier series is the cosine series.
The sine series is a special instance of the Fourier series.
Boundary value problems, with homogeneous Neumann conditions, in possibly irregular Euclidean domains are included as a special instance.
Human-verified similar examples from authoritative sources
Similar Expressions
35 human-written examples
As a special case, for instance, we have the identity (understood in the distribution sense) :\int_{-\infty}^\infty \delta (\xi-x) \delta x-\eta) \delta x-\etaa(\xi-\eta).
Wiki
In econometrics, for instance, a special case of the logicians' problems of definability plays an important role under the title "identification problem".
Encyclopedias
In the case of "deviations from the ordered requirement," an e-mail message replied, the company's policy is to offer a "free revision," but in this instance — a "special case," the message said — Term Paper Relief offered to redo the entire assignment.
News & Media
Clearly, (2) is a special case of this instance, when is the identity matrix.
Indeed, feminists have had to make a special case that, for instance, a woman's adopting stereotypical traits and roles is immoral because it harms women as a group (see Section 3.5), or that servility is immoral because it violates a duty to be self-respecting, as Kant believed.
Science
Expert writing Tips
Best practice
Use "a special instance" to draw attention to a specific situation that warrants individual consideration or differs significantly from the norm.
Common error
Avoid using "a special instance" when a simpler term like "example" or "case" would suffice. Overuse can dilute its impact and make your writing sound unnecessarily formal.
Source & Trust
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a special instance" functions primarily as a noun phrase. It is used to identify and refer to a particular occurrence or example that is noteworthy or unique. As Ludwig AI suggests, it highlights an event that stands out from the ordinary. The structure "a special instance of X" is often used to classify something.
Frequent in
Science
60%
News & Media
20%
Encyclopedias
10%
Less common in
Wiki
4%
Formal & Business
3%
Social Media
3%
Ludwig's WRAP-UP
In summary, "a special instance" is a noun phrase used to highlight a particular event or situation that warrants specific attention. Ludwig AI indicates that it is grammatically correct and well-suited for various formal contexts, notably science, news, and encyclopedias. While alternatives like "a unique case" or "a specific example" exist, "a special instance" carries a unique emphasis on the singularity and noteworthiness of the situation. To enhance your writing, consider it for emphasizing a unique situation but do not overuse it.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
a particular occurrence
Replaces 'special' with 'particular', emphasizing the specific nature of the event.
a unique situation
Substitutes 'instance' with 'situation', highlighting the circumstances.
an exceptional case
Uses 'exceptional' instead of 'special', conveying rarity.
a specific example
Replaces 'instance' with 'example', focusing on illustration.
an isolated event
Highlights the singularity of the event.
a noteworthy incident
Emphasizes the importance or significance of the occurrence.
a distinct occasion
Focuses on the separate and clear nature of the event.
a singular circumstance
Highlights the unusual or unique set of facts.
a rare phenomenon
Emphasizes the infrequency of the event.
an unusual happening
Replaces 'instance' with 'happening', suggesting something out of the ordinary.
FAQs
How can I use "a special instance" in a sentence?
Use "a special instance" when you want to highlight a particular case that is unique or significant within a broader context. For example, "This research focuses on a special instance of viral mutation."
What's a good alternative to "a special instance"?
Depending on the context, you could use alternatives such as "a unique case", "a specific example", or "a particular occurrence".
When is it appropriate to use "a special instance"?
It is appropriate when you're referring to a specific situation that deviates from the norm or requires particular attention. For instance, "The company made an exception in a special instance where the client's needs were extraordinary."
Is "a special instance" the same as "a special case"?
While similar, "a special instance" often implies a singular occurrence or event, while "a special case" might refer to a category or type of situation that requires different handling. The nuance depends on the context.
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
81%
Authority and reliability
4.5/5
Expert rating
Real-world application tested