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
which does
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "which does" is correct and usable in written English.
It can be used to introduce a clause that provides additional information about a subject or action previously mentioned. Example: "The new policy has several benefits, which does help improve employee morale."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
60 human-written examples
Which does raise questions about her efficacy.
News & Media
Which does rather beg the question why?
News & Media
This is Brooklyn, which does not.
News & Media
Which does not rhyme with north.
News & Media
Which does not immunize them, he added.
News & Media
Which does Sir Nicholas predict?
News & Media
Which does seem quite steep.
News & Media
Which does he identify with?
News & Media
Which does he like best?
News & Media
Which does not mean it isn't coming.
News & Media
Which does not make them very interesting.
News & Media
Expert writing Tips
Best practice
Use "which does" to introduce nonrestrictive clauses that add extra information about a noun. Remember to set off these clauses with commas.
Common error
Avoid using "which does" in restrictive clauses (clauses essential to the sentence's meaning). Use "that does" instead for restrictive clauses, and omit the commas.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which does" primarily functions as a relative clause connector. It introduces a nonrestrictive clause that provides additional, non-essential information about the noun or clause it refers to. As Ludwig AI suggests, this adds descriptive detail without altering the core meaning of the sentence.
Frequent in
News & Media
70%
Science
15%
Encyclopedias
5%
Less common in
Wiki
5%
Formal & Business
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "which does" is a versatile phrase used to introduce nonrestrictive clauses, adding extra detail without altering the core meaning of a sentence. As Ludwig AI confirms, it is grammatically sound and widely accepted. While its usage is common across various contexts, it's most prevalent in News & Media. Remember to use commas to offset "which does" clauses and avoid using it in restrictive clauses where "that does" is more appropriate. By understanding these nuances, you can effectively use "which does" to enhance the clarity and depth of your writing.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that performs
Focuses on the action or function being carried out.
that achieves
Emphasizes the accomplishment or outcome resulting from an action.
that realizes
Highlights the fulfillment or materialization of something.
that executes
Stresses the performance or carrying out of a task.
and that fulfills
Highlights the completion or satisfaction of a requirement or need.
which in turn
Emphasizes a sequential relationship where one action leads to another.
as a result
Indicates a direct consequence or outcome.
consequently
Similar to 'as a result', but often used in more formal contexts.
that therefore
Implies a logical deduction or conclusion.
accordingly
Suggests acting in a way that is appropriate or suitable to the circumstances.
FAQs
How can I use "which does" in a sentence?
The phrase "which does" introduces a nonrestrictive clause, adding extra information about a noun or situation already mentioned. For example: "The new software update includes a feature which does simplify data analysis."
What are some alternatives to using "which does"?
Depending on the context, you could use alternatives such as "that performs", "that achieves", or simply rewrite the sentence for clarity.
Is there a difference between using "which does" and "that does"?
"Which does" is typically used for nonrestrictive clauses (extra information), while "that does" is used for restrictive clauses (essential information). Using "which does" implies the information is additional and not crucial to understanding the sentence's core meaning.
When should I use a comma with "which does"?
Always use a comma before "which does" when it introduces a nonrestrictive clause. This comma indicates that the clause provides additional, but not essential, information.
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
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested