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
an instance wherein
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "an instance wherein" is correct and usable in written English.
It can be used to refer to a specific example or case in which something occurs or is applicable. Example: "There was an instance wherein the team successfully completed the project ahead of schedule."
✓ Grammatically correct
Academia
News & Media
Science
Wiki
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
5 human-written examples
This is an instance wherein it can have cognizance of matter of law solely.
Academia
This is an instance wherein it may be said they have jurisdiction both as to law and fact.
Academia
Finally, it is also worth underlining that, if the potential function does represent a global performance measure for the considered system, potential games are an instance wherein users can serve the greater good while playing a non-cooperative game and acting selfishly.
It's an instance wherein ironic enthusiasm can lapse into sincerity.
News & Media
He's particularly interested in exploring the phenomenon of ballooning, or "kiting," a trait which allows spiders to use their silk to "fly" distances, referring to an instance wherein multiple spiders took off at the same time, trailing behind gossamer from their spinnerets that intertwined to form what he called a "magic carpet".
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
55 human-written examples
Series creator Chris Carter was inspired to write "Space" after reading about news of the "face on Mars"—an instance of pareidolia wherein a mound in the Cydonia region of Mars was taken to resemble a human face.
Wiki
Series creator Chris Carter was inspired to write the episode after reading about news of the "face on Mars"—an instance of pareidolia wherein a mound in the Cydonia region of Mars was taken to resemble a human face.
Wiki
In the choice of this subordinate though important functionary, the adult inhabitants had a voice, and it is the only instance wherein they exercised an elective franchise.
Academia
For a special case of the problem instance wherein when all the processor-link pairs in the tree network can be utilized, we design an algorithm referred to as pull push optimal load distribution algorithm to obtain an optimal solution.
Science
As a later manager of the theatre wrote, "In the history of property, there has probably been no parallel instance wherein the legal labyrinth has been so difficult to thread".
Wiki
However, recent reports have demonstrated a few instances wherein protein levels is actually increased [6].
Science
Expert writing Tips
Best practice
Use "an instance wherein" to introduce a specific example that supports a broader claim or argument, particularly in formal or academic writing.
Common error
Avoid using "an instance wherein" in informal contexts; simpler alternatives like "a case where" or "a time when" are often more appropriate.
Source & Trust
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "an instance wherein" functions as a relative clause introducing a specific example or situation. It connects a general statement to a particular occurrence, providing context or evidence. Ludwig indicates this is correct and usable in written English.
Frequent in
Academia
33%
News & Media
33%
Science
17%
Less common in
Wiki
17%
Formal & Business
0%
Social Media
0%
Ludwig's WRAP-UP
In summary, "an instance wherein" is a grammatically sound phrase used to introduce specific examples, most commonly in formal writing. While Ludwig considers it correct, simpler alternatives like "a case where" are often suitable for less formal contexts. Its use is observed across academia, news, and scientific domains. When choosing this phrase, consider your audience and the desired tone of your writing to ensure it aligns with the overall message.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
an instance in which
Replaces "wherein" with a more common prepositional phrase.
a case in which
More common and direct alternative, suitable for most contexts.
an example where
Highlights the phrase as a specific illustration.
a situation where
Similar to "a case in which" but emphasizes the circumstances.
an occasion when
Focuses on a specific time or event.
a scenario where
Emphasizes a hypothetical or possible situation.
a circumstance under which
More formal and emphasizes the conditions.
a context where
Highlights the surrounding circumstances affecting the situation.
a time when
Simplifies the expression to a reference in time.
a point at which
Emphasizes a particular stage or moment.
FAQs
How can I use "an instance wherein" in a sentence?
Use "an instance wherein" to introduce a specific example or situation. For example, "This is "an instance wherein" careful planning prevented a potential disaster".
What's a simpler way to say "an instance wherein"?
You can use alternatives such as "a case where", "a situation where", or "a time when" depending on the specific context.
Is "an instance wherein" suitable for informal writing?
While grammatically correct, "an instance wherein" is more suited for formal or academic writing. In informal contexts, simpler alternatives are generally preferred.
What's the difference between "an instance wherein" and "an instance in which"?
"An instance wherein" is a more formal way of saying "an instance in which". The latter is more commonly used in contemporary English.
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
82%
Authority and reliability
4.1/5
Expert rating
Real-world application tested