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 in fact not
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "is in fact not" is correct and usable in written English.
It can be used to emphasize a negation or contradiction to a previous statement or assumption. Example: "The solution proposed by the team is in fact not the most efficient one available."
✓ Grammatically correct
News & Media
Science
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 investigation is, in fact, not over.
News & Media
Perhaps this is, in fact, not quite accurate.
News & Media
He professes that he is, in fact, not a vegetarian.
News & Media
It is in fact not a scientific controversy.
News & Media
Who is president is in fact not very important".
News & Media
Whiteness might be so dominant that it is, in fact, not picked up on at all.
News & Media
But the scenario in question is in fact not Iran, but Pakistan.
News & Media
Updated at 1.22pm BST 1.05pm BST Glenn Hoddle's hair is in fact not hair.
News & Media
As a dance venue, however, the Flea is in fact not ideal.
News & Media
It is in fact not possible to separate English matters from Scottish.
News & Media
This is, in fact, not a feature of normal books, and should definitely go.
News & Media
Expert writing Tips
Best practice
Use "is in fact not" to correct a misconception or to clarify a point that might be misunderstood. It adds emphasis and can prevent confusion.
Common error
Avoid using "is in fact not" excessively, as it can make your writing sound repetitive and overly emphatic. Consider using simpler alternatives like "is not" or rephrasing the sentence for a more natural tone.
Source & Trust
84%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is in fact not" functions as a negative emphatic assertion. It's used to strongly deny or contradict a statement, often to correct a misunderstanding. As seen in Ludwig, the phrase serves to clarify and emphasize the falsity of something.
Frequent in
News & Media
60%
Science
30%
Formal & Business
5%
Less common in
Encyclopedias
2%
Wiki
2%
Reference
1%
Ludwig's WRAP-UP
In summary, "is in fact not" is a versatile phrase used to emphatically negate or correct a statement. As Ludwig AI indicates, it is grammatically correct and frequently used in diverse contexts, including News & Media and Science. While its primary function is to emphasize a negative assertion, overuse should be avoided to maintain a natural writing style. Alternatives like "is actually not" or "is indeed not" can be used for variety. The phrase is best employed when correcting a misconception or when a strong negation is required.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is actually not
Emphasizes that something is different from what was expected or believed.
is indeed not
Adds emphasis to the negation, confirming something is certainly not the case.
is really not
Expresses a stronger sense of disbelief or surprise regarding the negation.
is certainly not
Conveys a sense of certainty and conviction about the negation.
is definitely not
Similar to 'certainly not' but perhaps with a slightly more informal tone.
does not in fact
Inverts the structure to put emphasis on the action, rather than the 'being'.
is simply not
Implies that the matter is straightforward and there is no room for argument.
is by no means
Suggests that something is absolutely not the case, leaving no possibility.
is far from
Indicates that something is the opposite of what is being suggested.
is nowhere near
Emphasizes that something is not even close to being true or accurate.
FAQs
How can I use "is in fact not" in a sentence?
Use "is in fact not" to strongly negate a statement or to correct a misunderstanding. For example, "The rumour about the company's bankruptcy "is in fact not" true."
What are some alternatives to saying "is in fact not"?
You can use alternatives like "is actually not", "is indeed not", or "is certainly not" to convey a similar meaning, depending on the context.
When is it appropriate to use "is in fact not" instead of simply 'is not'?
"Is in fact not" is best used when you want to emphasize the negation or when you are correcting a previous statement or misconception. It adds a layer of emphasis that "is not" might lack.
Is there a difference between "is in fact not" and "is not in fact"?
While both phrases are grammatically correct, "is in fact not" is more common and generally sounds more natural. "Is not in fact" can sound slightly awkward or overly formal in most contexts.
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