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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
duplicate for
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "duplicate for" is not a correct or usable part of a sentence in written English.
A correct phrase to use might be "duplicate of," or "copy of." For example, "I need a duplicate of this document for my records."
⚠ May contain grammatical issues
Science
News & Media
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
A middle ground is to do more to duplicate for disadvantaged pupils the home aid that middle-class children get.
News & Media
TLC detection was performed in duplicate for all samples.
Science
The lipid content was measured in duplicate for each sample.
Science
Measurements were made in duplicate for each analysis.
All the experiments were performed in duplicate for each dose.
Science
The measurements were carried out in duplicate for each sample.
Science
The drying process was performed in duplicate for each drying method.
Science
Samples were taken every 2 h and analysed in duplicate for size distribution.
At AnaMar AB, all the samples were tested in duplicate for COMP and CILP-2.
Cultures were made in duplicate for each hippocampus.
Science
Each sample was plated in duplicate for each time point.
Science
Expert writing Tips
Best practice
Always use "duplicate of" instead of "duplicate for" to ensure grammatical correctness. For example, "Please provide a duplicate of your passport" is correct.
Common error
Avoid using "for" when you mean "of" in the context of creating copies. "Duplicate of" specifies what something is a copy of, whereas "for" indicates purpose or recipient, which doesn't fit the context of replication.
Source & Trust
82%
Authority and reliability
1.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "duplicate for" is generally incorrect as it doesn't serve a standard grammatical function in English. While it appears in various contexts, its use is often a mistake for phrases like "duplicate of". Ludwig AI confirms this assessment.
Frequent in
Science
100%
Less common in
News & Media
0%
Formal & Business
0%
Ludwig's WRAP-UP
In summary, the phrase "duplicate for" is generally considered grammatically incorrect in English. The intended meaning is typically to indicate a copy or replication, but the correct and accepted phrasing is "duplicate of". Ludwig AI highlights that, while examples of "duplicate for" exist, these are generally considered errors. Therefore, it's essential to use "duplicate of" to ensure grammatical correctness and clarity in both formal and informal contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
duplicate of
Replaces "for" with "of" to create a grammatically correct prepositional phrase indicating a copy or replica.
copy of
Offers a simpler, more common alternative to "duplicate", maintaining the sense of replication.
replicate
Uses "replicate" as a verb, changing the structure to focus on the action of copying.
reproduce
Similar to replicate, focusing on the act of creating a copy.
make a copy of
More explicit, clarifying the action of creating a copy.
create a duplicate of
A more formal way of expressing the same idea as "make a copy of".
mirror
Suggests an exact copy or reflection, implying similarity.
clone
Implies an identical copy, often used in scientific contexts.
emulate
Focuses on imitating or matching something, rather than creating an exact copy.
simulate
Suggests creating something that resembles the original, but may not be identical.
FAQs
What is the correct way to use "duplicate" in a sentence?
The correct phrasing is "duplicate of" not "duplicate for". For example, say "This is a "duplicate of" the original document."
What can I say instead of "duplicate for"?
You can use phrases like ""duplicate of"", "copy of", or "replicate" depending on the specific context.
Is "duplicate for" grammatically correct?
No, "duplicate for" is not grammatically correct. The correct form is "duplicate of". Using "for" in this context is a common error. Consider using alternatives like "copy of".
How does the meaning change if I use "duplicate of" instead of "duplicate for"?
Using "duplicate of" makes the sentence grammatically correct and clear. "Duplicate for" is not a standard English phrase and could be confusing. "Duplicate of" clearly indicates that one thing is a copy of another.
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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
82%
Authority and reliability
1.8/5
Expert rating
Real-world application tested