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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
at someone's request
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "at someone's request" is correct and usable in written English
You can use it when someone has asked you to do something or for you to provide something. For example, "I created the presentation at my boss's request."
✓ Grammatically correct
News & Media
Wiki
Science
Alternative expressions(17)
at the request of
at the behest of
as requested by someone
by request
at the instance of
on someone's behalf
acting for someone else
filling in for someone
substituting for someone
lending a hand
covering for someone
step in
stepping in for someone
acting as a substitute
lend a hand
as requested of
on behalf of my wife and i
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
1 human-written examples
"All my life I've written music at someone's request for specific circumstances, whether it's a film score for Ken Russell, a symphony for the Philharmonia or a quartet for Wigmore Hall," he said.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
58 human-written examples
Without thinking, Vedernikov asked him how he could bear to alter his finished work at someone else's request.
News & Media
Throw it at someone's head.
Wiki
Never fire at someone's face.
Wiki
Never shoot at someone's eyes.
Wiki
Prosecutors maintain that Mr. Minor, 38, whose criminal record includes drug and robbery arrests, committed second-degree murder because state law, they say, prohibits killing someone, even at the person's request.
News & Media
Charles Poletti, who broadcast that appeal at the government's request, was someone the Italians could view with pride.
News & Media
Highsmith found someone who knew one of the stickup men and who, at Highsmith's request, negotiated with them.
News & Media
At Michael's request, please no flowers.
News & Media
An investigation ensued at Blazer's request.
News & Media
At Mr. Steel's request Mr.
News & Media
Expert writing Tips
Best practice
Position the phrase at the beginning of a sentence to establish the context immediately for the reader.
Common error
Avoid using the preposition 'on' (as in 'on someone's request'). While you can act 'on someone's behalf' or 'upon request', the standard idiomatic construction for a personal possessive is always 'at'.
Source & Trust
92%
Authority and reliability
4.9/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "at someone's request" functions as a prepositional phrase that acts as an adverbial modifier. According to Ludwig, it modifies a verb to indicate the reason or external prompt for an action. It identifies the initiator of a task without making them the grammatical subject of the sentence.
Frequent in
News & Media
58%
Formal & Business
25%
Wiki
12%
Less common in
Science
3%
Social Media
1%
Reference
1%
Ludwig's WRAP-UP
In conclusion, "at someone's request" is a robust and essential phrase for attributing agency in English. Ludwig AI highlights its prevalence in high-authority journalism and professional documentation. It is grammatically correct and versatile, allowing writers to substitute generic pronouns with specific names or titles easily. For those seeking a slightly more formal tone, alternatives like "upon someone's request" or "at the behest of" are excellent choices, but the main phrase remains the most idiomatic and widely understood option for everyday professional use.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
at the request of
Moves the subject to the end of the phrase for a more formal or administrative tone
upon someone's request
Uses a more formal preposition to emphasize the conditionality of the action
per someone's request
Commonly used in business correspondence to indicate adherence to a prompt
at someone's behest
A more literary and formal alternative that suggests a strong command or authoritative request
as requested by someone
A passive construction that places the emphasis on the request itself
by request
A shortened version often used when the specific person making the request is already known or less important
following someone's request
Emphasizes the chronological sequence of the request and the subsequent action
at the instance of
A legalistic and highly formal variation mostly found in judicial or official texts
at someone's suggestion
Softens the prompt from a 'request' to a less mandatory 'suggestion'
on someone's behalf
Indicates that an action is being done for someone else, which may or may not include a direct request
FAQs
How do I use "at someone's request" in a sentence?
You can use it to explain the motivation behind an action, such as in the sentence: "The document was updated "at the manager's request"."
What is the difference between "at someone's request" and "upon someone's request"?
Both are correct, but "upon someone's request" is slightly more formal and is often used to describe a condition that triggers a specific event.
Can I say "per someone's request" instead?
Yes, "per someone's request" is very common in office and business settings, though it can occasionally sound overly bureaucratic compared to the neutral "at someone's request".
Is "at someone's request" formal enough for a legal document?
Yes, it is suitable for formal writing, though legal professionals often prefer the more specific "at the request of" followed by the full name of the party.
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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
92%
Authority and reliability
4.9/5
Expert rating
Real-world application tested