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 is something
Grammar usage guide and real-world examplesUSAGE SUMMARY
"which is something" is correct and usable in written English.
You can use this phrase in any sentence where you are linking an idea or object back to something that has previously been stated. For example: He always seemed to have a way of knowing what was going on, which is something I've always admired about him.
✓ Grammatically correct
News & Media
Academia
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 is something of a surprise.
News & Media
Which is something that generally never happens.
News & Media
Which is something I'm particularly good at".
News & Media
Which is something they do rather well.
News & Media
Which is something that I don't have in practice.
Another one which is something more looks like something mechanical.
I've learned stamina, which is something you master playing football.
Academia
Which is something you never want to hear, really.
News & Media
"Breakfast With Freud" is seldom boring, though, which is something.
News & Media
— which is something to be devoutly thankful for.
News & Media
"Which is something he did quite a bit of.
News & Media
Expert writing Tips
Best practice
Vary your sentence structure. While grammatically sound, overuse of "which is something" can make your writing monotonous. Consider using synonyms or rephrasing for variety.
Common error
Avoid using "which is something" in restrictive clauses (essential for defining the noun). Use "that is something" instead, or rephrase to avoid a relative clause altogether. For example, instead of "The car, which is something I need to fix, is old," consider "The car that needs fixing is old."
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which is something" functions as a non-restrictive relative clause, adding extra information or commentary about the preceding clause. It introduces a subordinate clause that provides additional context or emphasizes a particular aspect. Ludwig examples show it linking observations to opinions.
Frequent in
News & Media
73%
Academia
20%
Formal & Business
7%
Less common in
Science
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, "which is something" is a versatile phrase used to introduce non-restrictive clauses, adding extra information or commentary to a preceding statement. As Ludwig AI confirms, its usage is grammatically correct and very common, especially in News & Media and academic writing. However, remember to use it appropriately to avoid monotony and ensure clarity. Consider alternative phrases to vary your writing style, and be mindful of the distinction between restrictive and non-restrictive clauses. Ludwig's examples highlight the phrase's broad application and acceptability in diverse contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
that's something
More informal, replaces "which is" with "that's" for a slightly more conversational tone.
this is something
Focuses on the immediate relevance or importance of the 'something' being referred to.
which is important
Directly states the relevance or value of the preceding information.
it's a thing
Very informal and conversational, implying the mentioned thing is noteworthy or relevant.
this is significant
Highlights the importance or consequence of the referenced information.
that is noteworthy
More formal, explicitly indicates that the preceding information is worth paying attention to.
and that matters
Emphasizes the impact or consequence of the preceding information.
that's remarkable
Emphasizes the surprising or exceptional nature of the preceding information.
it is of note that
A more formal way to introduce a relevant detail or observation.
of particular importance
Highlights something especially crucial or significant
FAQs
How can I use "which is something" in a sentence?
Use "which is something" to add an additional, non-essential detail or comment to a preceding clause. For example: "He always arrived on time, "which is something" I admired."
What's a more formal alternative to "which is something"?
For a more formal tone, consider phrases like "which is significant" or "it is of note that" depending on the specific context.
Is it always necessary to include "which is something"?
No, often the sentence works perfectly well without it. For instance, instead of "She is very talented, "which is something" everyone knows," you can simply say, "She is very talented, and everyone knows it."
Can I use "that is something" instead of "which is something"?
"That is something" is also grammatically correct, but ""which is something"" is generally preferred when introducing a non-restrictive clause that adds additional information. Be mindful to keep the information supplemental.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
91%
Authority and reliability
4.5/5
Expert rating
Real-world application tested