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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
on file
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "on file" is correct and usable in written English.
You can use "on file" to refer to written documents that an organization or individual has available for reference or documentation. For example, "The patient's medical records are on file and accessible at the hospital."
✓ Grammatically correct
News & Media
Science
Wiki
Alternative expressions(20)
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
"They keep them on file".
News & Media
His sizes were on file.
News & Media
On file, so to speak".
News & Media
Shouldn't that have been on file?
News & Media
All tips were kept on file.
News & Media
I put some points on file cards.
News & Media
They have five million items on file.
News & Media
He had a doctor's note on file.
News & Media
Cole's mug shot was already on file.
News & Media
He has 3.6 million donors on file.
News & Media
Nassau has at least a million cards on file.
News & Media
Expert writing Tips
Best practice
Use "on file" when you want to indicate that information is officially recorded and accessible for future reference. For example, "The customer's billing address is on file."
Common error
Avoid using "on file" when the information is merely remembered or informally noted. "On file" implies a formal record-keeping system.
Source & Trust
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "on file" functions as a prepositional phrase, typically modifying a noun or verb to indicate the location or state of information. As Ludwig AI indicates, this suggests that the information is formally recorded and available for reference.
Frequent in
News & Media
40%
Wiki
30%
Science
15%
Less common in
Formal & Business
10%
Academia
3%
Encyclopedias
2%
Ludwig's WRAP-UP
The phrase "on file" is a common and grammatically correct prepositional phrase used to indicate that information or documents are officially recorded and available. Ludwig AI confirms its validity and widespread usage. As evidenced by the numerous examples, it's frequently found in News & Media, Wiki, and Scientific contexts. When using "on file", ensure that you are referring to information that is formally documented, not just remembered. Alternatives like "recorded" or "archived" can be used depending on the specific nuances you want to convey. In summary, "on file" is a reliable and professional way to communicate that information is officially registered and stored.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
kept on record
Highlights the act of maintaining a record for future reference.
in the records
Highlights the presence of information within an official or organized collection.
documented
Focuses on the existence of written or formal records.
recorded
Emphasizes the act of capturing or documenting information.
officially registered
Emphasizes the formal and authoritative nature of the recording.
registered
Implies an official recording of information, typically with an authority.
available for review
Stresses the accessibility and readiness of information for examination.
catalogued
Suggests information has been systematically organized and listed.
archived
Implies the information has been stored for long-term preservation.
in storage
Focuses on the physical or digital location where information is kept.
FAQs
How can I use "on file" in a sentence?
You can use "on file" to indicate that information or documents are officially recorded and stored. For example, "The signed contract is "kept on record" in the company archives."
What is a good substitute for "on file"?
Alternatives include "recorded", "documented", or "archived" depending on the specific context.
What does it mean when something is "on file"?
It means that the information is officially recorded and stored, typically in a systematic manner, for easy retrieval and reference.
Is it appropriate to use "on file" in formal writing?
Yes, "on file" is appropriate for formal writing as it clearly indicates the official storage and availability of information.
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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
80%
Authority and reliability
4.5/5
Expert rating
Real-world application tested