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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
one-time exception
Grammar usage guide and real-world examplesUSAGE SUMMARY
"one-time exception" is a perfectly correct and usable phrase in written English.
You can use it to describe an occasion where something happens despite usually being disallowed or otherwise forbidden. For example, you might say, "The manager granted me a one-time exception and allowed me to work overtime."
✓ Grammatically correct
News & Media
Science
Formal & Business
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
23 human-written examples
This week, the National Security Council decided to send the man to Yemen in a one-time exception, an official said on Friday.
News & Media
Staff lawyers for Mr. Leahy and Mr. Grassley are working on draft language that would make clear that the change was a one-time exception, although it would not name Mr. Mueller specifically, according to an official familiar with the deliberations.
News & Media
More important, Felton has by all accounts made good on his promise that last season's lockout-worsened conditioning issues were a one-time exception.
News & Media
The company eventually credited them as "a one-time exception," he said.
News & Media
"As such, we decided to make a one-time exception to our standard.
News & Media
There is a one-time exception that would allow the Bills to break the agreement for just under $28.4m in 2020.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
37 human-written examples
But that's all very hypothetical: maybe justices could instead retain their strict Pension Clause doctrine, on the theory that the people can easily make one-time exceptions as needed.
News & Media
Please note that this is a one time exception because the iTunes Terms and Conditions state that all sales are final".
News & Media
They may also be much more agreeable to a one time exception rather than a cart blanche agreement for the children to miss school whenever there is a planned trip.
News & Media
Unless you are a resident of another state in which case you can request a one time exception from the county in which the license is obtained.
Wiki
"As far as I am concerned, it's a one-time only exception.
News & Media
Expert writing Tips
Best practice
When using "one-time exception", clearly state the standard rule or policy that is being deviated from to provide context.
Common error
Avoid implying that a "one-time exception" sets a new precedent. Emphasize its non-recurring nature to prevent future misunderstandings.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "one-time exception" functions as a noun modifier, specifically acting as a compound adjective to describe the type of exception being made. This is supported by Ludwig AI, confirming its correct and usable form.
Frequent in
News & Media
52%
Science
26%
Formal & Business
10%
Less common in
Academia
6%
Wiki
3%
Encyclopedias
3%
Ludwig's WRAP-UP
The phrase "one-time exception" is a commonly used and grammatically correct way to describe a singular deviation from an established rule or policy. As Ludwig AI confirms, it is suitable for use in various contexts, particularly in news, business, and formal communications. The phrase is often used to clarify that the exception is not a precedent and should not be interpreted as a permanent policy change. When using "one-time exception", clarity is key; explicitly stating the rule being deviated from can prevent misunderstandings.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
single deviation
Highlights the act of departing from a norm or standard on one occasion.
isolated instance
Emphasizes the uniqueness and singularity of the occurrence.
exceptional circumstance
Underlines that only due to specific circumstances something can be allowed just one time.
limited exemption
Focuses on the restrictive nature of the exception, applying only to a single case.
unique concession
Focuses on the act of granting something not usually permitted, but only once.
non-recurring event
Stresses that the exception will not happen again.
special allowance
Highlights the permission granted, which is not normally given and occurs only once.
instance-specific waiver
Highlights that something is waived only for that instance.
out-of-norm event
Emphasizes the deviation of that event from the norm.
ad hoc accommodation
Highlights that accommodation is done for a particular or specific purpose only.
FAQs
How can I use "one-time exception" in a sentence?
You can use "one-time exception" to indicate a deviation from a standard rule that is only applied once. For example, "The company made a "one-time exception" to their policy to accommodate the customer's request."
What's a good substitute for "one-time exception"?
Alternatives include "isolated instance", "single deviation", or "exceptional circumstance", depending on the nuance you want to convey.
Is it correct to say "one time exception" without the hyphen?
While understandable, "one-time exception" is generally preferred and more grammatically sound because "one-time" acts as a compound adjective modifying "exception".
What is the difference between a "one-time exception" and a permanent policy change?
A "one-time exception" is a singular instance where a rule is waived, while a permanent policy change alters the rule itself for all future instances.
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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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested