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 group which
Grammar usage guide and real-world examplesUSAGE SUMMARY
"a group which" is a correct and usable phrase in written English.
It is used to introduce a subordinate clause which further describes the group in question. For example, "The students formed a group which met weekly to discuss the relevant topics."
✓ Grammatically correct
News & Media
Science
Academia
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
We usually go out as a group, which makes it really fun".
News & Media
"So Lynas would become part of a group which makes hay in Burma.
News & Media
We always fly and whine as a group, which does take the edge off.
News & Media
Portugal have to finish top of a group which also includes Austria, Hungary and Iceland.
News & Media
Most were active in LulzSec, a group which claims to have taken the CIA's website offline.
News & Media
This weekend Mr Obama will meet ASEAN's leaders as a group, which is a first.
News & Media
One of the prominent post war intellectuals in France, a group which includes Lacan, Levi Strauss, Foucault and Derrida.
Academia
Bromeliads are also a group which, like their grass relatives, have developed an alternative form of photosynthesis, called C4 photosynthesis.
White has the men come in a group, which mimics the camaraderie found in a real barbershop.
News & Media
We did what we had to do in a group which was not one of the strongest.
News & Media
Niedermaier is the head of Tau Investment Management, a group which wants to invest $500m in upgrading and modernising factories.
News & Media
Expert writing Tips
Best practice
When using "a group which", ensure that the clause following 'which' provides essential information about the group, not just additional or non-essential details. If the information is non-essential, consider using 'a group, which' instead.
Common error
Avoid using "that" instead of "which" when the clause is nonrestrictive (i.e., provides extra, non-essential information). "Which" is appropriate in nonrestrictive clauses, typically set off by commas.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "a group which" functions as a noun phrase followed by a relative clause, providing additional or essential information about the group. It is commonly used to define or describe the characteristics, purpose, or composition of a specific group, as demonstrated by Ludwig's examples.
Frequent in
News & Media
48%
Science
20%
Wiki
13%
Less common in
Academia
12%
Formal & Business
7%
Ludwig's WRAP-UP
In summary, "a group which" is a common and grammatically correct phrase used to introduce a relative clause that provides essential or additional information about a group. Ludwig AI confirms its widespread usage across various contexts, particularly in news, scientific, and academic writing. When using this phrase, ensure that "which" correctly introduces a nonrestrictive clause, adding clarity and specificity to your writing. Pay attention to the context to ensure it is correctly referring the group.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
a team that
Replaces "group which" with "team that", changing the noun but maintaining the specifying function.
a cohort that
Substitutes "group" with "cohort", implying a shared characteristic or experience.
an organization that
Replaces "group" with "organization", suggesting a more formal structure.
a body that
Uses "body" as a synonym for "group", often in a formal or institutional context.
a set that
Employs "set" instead of "group", suitable in mathematical or abstract contexts.
a category that
Shifts from "group" to "category", emphasizing classification.
a party that
Replaces "group" with "party", especially in political contexts.
a collection that
Uses "collection" instead of "group", implying an assemblage of items or people.
an assembly that
Replaces "group" with "assembly", suggesting a gathering for a specific purpose.
a class that
Substitutes "group" with "class", useful in contexts of categorization or hierarchy.
FAQs
How can I use "a group which" in a sentence?
Use "a group which" to introduce a relative clause that provides essential information about the group. For example, "We formed "a group which" focused on environmental issues".
What are some alternatives to using "a group which"?
Depending on the context, you could use alternatives such as "a team that", "an organization that", or "a body that".
Is it always necessary to use "a group which", or can I sometimes omit the "which"?
While "which" is grammatically correct, in some informal contexts, you might omit it, but be cautious, as it could affect clarity. For example, "the group I joined" is acceptable in casual conversation but less formal than using relative pronouns.
What's the difference between using "a group that" and "a group which"?
Generally, "that" is used for restrictive clauses (essential to the meaning), while "which" is used for nonrestrictive clauses (additional information). Using "a group that" implies the clause is crucial to understanding what group you're referring to, whereas ""a group which"" adds extra detail.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested