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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 refer
Grammar usage guide and real-world examplesUSAGE SUMMARY
'which refer' is correct and usable in written English.
You can use it when referring to a particular thing that has been previously mentioned in the same sentence or a previous sentence. For example: The apple tree, which refer to the one in the backyard, is in full bloom.
✓ Grammatically correct
News & Media
Science
Encyclopedias
Wiki
Formal & Business
Alternative expressions(7)
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
58 human-written examples
Each is annotated with tiny numbers, which refer to footnotes.
News & Media
Their language contains a vast catalog of cattle names, which refer to characteristics like color and hide pattern.
News & Media
The heads appear to represent places and times through portraits, which refer to both the mythological and the actual.
News & Media
Other names for dandelion include wet-the-bed and pissy-beds, which refer to its effectiveness as a diuretic.
News & Media
Then there are Mr. Zimmer's ads, which refer to him as "a special congressman" in the present tense.
News & Media
The documents, which refer to the autopsy report and interviews with witnesses, highlight these issues: Signs of physical abuse.
News & Media
But opposition groups, which refer to the event as "Formula Blood", see it as a rare opportunity to highlight injustice.
News & Media
The mystery began thousands of years ago with Egyptian hieroglyphs, which refer to the "iron of heaven".
News & Media
The group has had to fight for the right to run some of the advertisements, which refer to Muslims killing Jews, in court.
News & Media
"Technology and science which refer only to their own principles," he said, "often fail to follow limits required by the larger and deeper vision of the human person".
News & Media
As evidence, the suit points to the signs held by striking stagehands in front of the Nederlander theaters, which refer only to the league, not the Nederlanders.
News & Media
Expert writing Tips
Best practice
When using "which refer", ensure the noun it modifies is clearly defined in the preceding text to avoid ambiguity. For example, instead of 'The data, which refer...', clarify which specific data is being referenced.
Common error
Avoid using "which refer" when the antecedent is ambiguous or too distant from the clause. This can confuse readers. Rephrase the sentence to make the connection clear. For example, instead of 'The study analyzed several factors and used complex algorithms, which refer to the challenges...', specify 'which algorithms refer to the challenges...'
Source & Trust
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "which refer" functions as a relative clause, providing additional information about a noun or pronoun in the main clause. As Ludwig AI confirms, it is a grammatically sound way to add detail, exemplified in the provided instances where documents, names, or terms are further defined or connected to other concepts.
Frequent in
News & Media
33%
Science
40%
Wiki
8%
Less common in
Encyclopedias
3%
Formal & Business
3%
Reference
0%
Ludwig's WRAP-UP
The phrase "which refer" is a grammatically correct and very common relative clause used to add clarifying details about a previously mentioned noun. According to Ludwig AI, its usage is appropriate and effective for establishing connections between subjects and related information. While it appears across various contexts, including news, science, and encyclopedias, it's crucial to ensure the antecedent is clear to avoid ambiguity. Alternatives like "which relate" or "which pertain" can be used depending on the specific nuance desired. When writing, ensure the noun that "which refer" modifies is clearly defined in the preceding text. Considering that Ludwig AI finds "which refer" perfectly usable in written English, this guide provides a strong foundation for its effective application.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
which relate
Indicates a connection or association, but is less direct than "which refer".
which references
Similar to "which refer" but slightly more formal.
which indicate
Highlights the pointing out or showing of something.
which allude
Suggests an indirect reference or implication.
which mention
A more general term for bringing something to attention.
which pertain
Suggests a relevance or connection to a particular subject.
which describe
Focuses on providing details or characteristics rather than a direct reference.
which see
Used to direct the reader to another source for further information.
which cite
Indicates the use of a source as evidence or support.
which speak
Emphasizes the act of conveying information about a topic.
FAQs
How can I use "which refer" in a sentence?
"Which refer" is used to provide additional information about a noun previously mentioned in the sentence. For example: 'The documents, "which refer" to the autopsy report, highlight signs of physical abuse.'
What are some alternatives to "which refer"?
Alternatives include "which relate", "which allude", or "which pertain" depending on the specific nuance you want to convey.
Is it better to use "that refers" or "which refers"?
Both "that refers" and "which refers" can be grammatically correct, but "which refers" is generally used in nonrestrictive clauses that provide additional, non-essential information. "That refers" is used in restrictive clauses that are essential to the meaning of the sentence.
What is the difference between "refer to" and "which refer"?
"Refer to" is a verb phrase that indicates a direct reference or connection. "Which refer" is a relative clause that modifies a noun and provides additional information about it, indicating its connection to something else.
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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
83%
Authority and reliability
4.5/5
Expert rating
Real-world application tested