Used and loved by millions
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
this is not customary
Grammar usage guide and real-world examplesUSAGE SUMMARY
The sentence "this is not customary" is correct and usable in written English.
You can use it when you want to express that something is not usual or normal practice. For example, "The company's policy of having employees work on weekends is not customary."
✓ Grammatically correct
News & Media
Wiki
Science
Formal & Business
Alternative expressions(13)
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
3 human-written examples
"This is not customary within the world of arenas or stadiums, and it's not customary in this marketplace".
News & Media
Pope Alexander VII decreed in 1659 that the crosiers of abbots include a sudarium or veil, but this is not customary in English heraldry.
Wiki
Keep in mind that this is not customary due to the very high alcohol content of traditional absinthe.
Wiki
Human-verified similar examples from authoritative sources
Similar Expressions
57 human-written examples
Health insurance plans maintain the right to deny coverage if the cost for medical care is too high -- that is, not customary.
News & Media
Furthermore, the scientific results were corroborated by the patients' enthusiasm and diligent participation, something that is not customary for this population.
Science
As stated in the groups, many people are uncomfortable when asked for consent because it is not customary for this to happen.
Science
A similar incident occurred when Hans von Bülow conducted Der Ideale in Berlin in 1859; after the performance, the conductor turned on the audience and ordered the demonstrators to leave, "as it is not customary to hiss in this hall".
Wiki
It is not customary to talk about all this in court, because nobody asks about it in the trial.
News & Media
That is not customary in Paris or Lyon or Toulouse.
News & Media
In Kansas City, it is not customary to eat cookie dough.
News & Media
Adaptive improvement of anti-SAg catalytic Igs in HIV infected subjects is not customary.
Science
Expert writing Tips
Best practice
Use "this is not customary" to politely point out deviations from expected behavior or standard procedures. For example, "Asking for personal information upfront is not customary in our company".
Common error
While accurate, "this is not customary" can sound formal. Opt for simpler alternatives like "that's unusual" or "it's uncommon" when writing for informal contexts.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "this is not customary" functions as a statement to express that a particular action, behavior, or practice deviates from what is generally accepted or considered normal. Ludwig AI confirms this with examples showing its use across diverse contexts.
Frequent in
News & Media
50%
Wiki
25%
Science
12%
Less common in
Formal & Business
13%
Science
0%
News & Media
0%
Ludwig's WRAP-UP
The phrase "this is not customary" effectively communicates that something deviates from the norm. Ludwig AI identifies it as grammatically correct and suitable for various contexts, predominantly in news, wiki and science. While functionally sound, consider your audience and context: simpler alternatives may better suit informal settings. Remember that while expressing deviations from the norm, "this is not customary" maintains a neutral to formal tone, fitting for professional or news-related communications. The available examples provided by Ludwig show that the phrase can be useful in both direct statements and reporting of events.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
this is unconventional
Replaces "customary" with "unconventional", highlighting a departure from standard conventions.
this is out of the ordinary
Emphasizes the unusual nature of something, using more descriptive language.
this is not the norm
Uses a more concise and direct expression, focusing on what is typical.
this is unusual
Simplifies the phrase using the adjective "unusual" to denote something uncommon.
this deviates from the standard
Highlights that something is straying from an accepted benchmark or expectation.
this is an exception to the rule
Indicates a specific departure from a general principle or guideline.
this is unprecedented
Highlights the novelty of something; that is, something that has not happened before.
this is extraordinary
Highlights the fact that something is very unusual or remarkable.
this is atypical
Replaces "not customary" with "atypical", stressing a lack of conformity to a type.
this is against established practice
Directly states that something is conflicting with accepted methods or traditions.
FAQs
What does "this is not customary" mean?
The phrase "this is not customary" means that something is not usual, typical, or generally accepted practice. It implies a deviation from established norms or traditions.
How can I use "this is not customary" in a sentence?
You can use "this is not customary" to point out that a certain behavior, practice, or procedure is unusual. For example: "Requesting a deposit before the service is provided "this is not customary" in this industry".
What are some alternatives to "this is not customary"?
Alternatives to "this is not customary" include phrases like "that's unusual", "it's uncommon", "that's not the norm", or "this is unconventional".
Is it more formal to say "this is not customary" than "this is unusual"?
Yes, "this is not customary" is generally more formal than "this is unusual". The former is suitable for professional or official contexts, while the latter is appropriate for informal conversation.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested