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
is not common
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is not common" is correct and usable in written English.
You can use it to describe something that is infrequently encountered or not widely known. Example: "The method of using this particular technique is not common in traditional practices."
✓ Grammatically correct
News & Media
Science
Academia
Alternative expressions(6)
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
The disease is not common.
News & Media
Vehicle hire is not common.
News & Media
"This kind of isolation is not common".
News & Media
Nationally, though, premarital abstinence is not common.
News & Media
Periapical actinomycosis is not common.
The procedure is not common elsewhere.
News & Media
Vehicle hire for foreigners is not common.
News & Media
"The bacteria is not common," he said.
News & Media
Transfer between medical schools is not common.
Academia
Intelligence is not common to everyone.
Academia
The damage is not common or public.
Academia
Expert writing Tips
Best practice
Use "is not common" to introduce a surprising or unexpected fact. This can add emphasis and engage the reader's attention.
Common error
Avoid using "is not common" excessively in formal or academic writing. Over-reliance on this phrase can make your writing sound repetitive. Instead, vary your language by using synonyms like "rare", "unusual", or "infrequent" to maintain reader engagement and demonstrate a broader vocabulary.
Source & Trust
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is not common" functions primarily as a descriptive statement, indicating that something occurs infrequently or is not widely prevalent. Ludwig AI confirms this through numerous examples, demonstrating its role in conveying rarity or unusualness.
Frequent in
News & Media
42%
Science
35%
Academia
17%
Less common in
Formal & Business
3%
Encyclopedias
2%
Wiki
1%
Ludwig's WRAP-UP
In summary, the phrase "is not common" is a versatile expression used to denote that something is infrequent or unusual. As confirmed by Ludwig AI, its grammatical correctness and wide applicability make it suitable for various contexts, ranging from academic and scientific writing to news and media. While it is frequently used, varying your language with synonyms like "rare" or "unusual" can enhance your writing style. Remember to provide clear context when using this phrase to ensure effective communication.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is uncommon
A direct synonym, indicating something not typically found.
is unusual
Emphasizes the deviation from the norm or expected.
is rare
Highlights the scarcity or infrequent occurrence of something.
is infrequent
Focuses on the lack of regularity or frequency.
is atypical
Suggests a departure from the typical or standard.
is scarce
Indicates a limited availability or occurrence.
is exceptional
Implies being an exception to the general rule.
is out of the ordinary
Stresses the unusual or remarkable nature.
is few and far between
Highlights the rarity and separation of occurrences.
is hardly ever seen
Emphasizes the infrequency of observation or encounter.
FAQs
How can I use "is not common" in a sentence?
You can use "is not common" to describe something that occurs infrequently or is not widely observed. For example: "Although effective, this treatment method "is not common" due to its high cost".
What can I say instead of "is not common"?
Alternatives to "is not common" include "is rare", "is unusual", or "is infrequent", depending on the specific nuance you want to convey.
Is it better to say "is not common" or "is uncommon"?
"Is not common" and "is uncommon" are largely interchangeable. "Is uncommon" may sound slightly more formal, but both are grammatically correct and widely understood.
When is it appropriate to use the phrase "is not common"?
The phrase "is not common" is appropriate when you want to emphasize that something is unusual or deviates from the norm. It is suitable for various contexts, including academic, professional, and casual settings.
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
85%
Authority and reliability
4.5/5
Expert rating
Real-world application tested