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
ostensibly not
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "ostensibly not" is correct and usable in written English.
It can be used to indicate that something appears to be the case, but there is a suggestion that it may not be true. Example: "The project is ostensibly not a priority for the management, but there are signs that it is receiving more attention than expected."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
seemingly not
it suggests otherwise
it indicates not
clearly not
it would seem not
presumably not
reportedly not
it smells not
it implies not
apparently avoided
it seems not
supposedly not
apparently not
it does not seem so
it tends not
demonstrably not
it illustrates not
doesn't seem like it
it suggests not
patently not
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
18 human-written examples
The Good Wife is ostensibly not a show so many critics and fans should enjoy.
News & Media
The administration is already escalating its force presence in Iraq, though ostensibly not for combat purposes.
News & Media
Michael Howard sacked him ostensibly not because of the affair, but because Boris lied to him.
News & Media
instituted a new rule, ostensibly not aimed specifically at Pistorius, relating to running-shoe technology that employed "springs".
News & Media
But the reasons for his contract not being renewed are, ostensibly, not to do with him, but rather his backroom staff.
News & Media
Organized medicine invariably opposes wider scopes of practice and independent practice of nonphysician health professionals, ostensibly not to protect economic turf but to protect the quality of patient care.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
42 human-written examples
"He got fired ostensibly for not being truthful, or not following the law".
News & Media
This was surprising because the vegetarians ostensibly did not consume poultry and, therefore, should not have been directly exposed to poultry-source E. coli.
Science
One day after Manny Ramirez told ESPNDeportes.com that he was "staying in Boston" and ostensibly did not want to be traded from the Red Sox, his agent reiterated yesterday that Ramirez had not withdrawn his trade request.
News & Media
That way the job, ostensibly, does not move abroad.
News & Media
As I crept closer, the boy was being scolded by his mother — ostensibly about not finishing his dinner.
News & Media
Expert writing Tips
Best practice
Use "ostensibly not" to introduce a statement that appears to be true but may conceal a different reality. This adds nuance and encourages critical thinking from the reader.
Common error
While "ostensibly not" is grammatically sound, avoid using it too frequently in casual conversation or informal writing. Opt for simpler alternatives like "seemingly not" or "apparently not" to maintain a natural tone.
Source & Trust
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "ostensibly not" functions as an adverbial modifier, adding nuance to a statement by suggesting that something is not what it seems. It introduces an element of doubt or contrast. As Ludwig AI confirms, it’s grammatically sound and usable.
Frequent in
News & Media
60%
Science
25%
Formal & Business
15%
Less common in
Academia
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "ostensibly not" is a grammatically correct and commonly used expression that adds nuance to statements by suggesting a potential discrepancy between appearance and reality. According to Ludwig AI, it’s a valid and useful phrase. While frequently found in News & Media and Scientific contexts, its formality makes it less suitable for casual settings. Consider alternatives like "apparently not" or "seemingly not" in informal conversations. Remember that using "ostensibly not" can invite deeper analysis and skepticism from your audience.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
apparently not
Replaces "ostensibly" with "apparently", suggesting something seems untrue based on available evidence.
seemingly not
Substitutes "ostensibly" with "seemingly", indicating an appearance that may be deceptive.
not ostensibly
Inverts the phrase, maintaining the core meaning while slightly altering the emphasis.
on the surface not
Adds the "on the surface" qualifier, stressing the superficial nature of the statement's untruthfulness.
purportedly not
Replaces "ostensibly" with "purportedly", emphasizing a claim's questionable validity.
allegedly not
Implies the information's uncertainty by using "allegedly".
supposedly not
Uses "supposedly" to indicate a common belief that might not be true.
ostensibly not so
Rephrases "ostensibly not" with "ostensibly not so", indicating that something is apparently not the case.
ostensibly it isn't
Expands "ostensibly not" into a longer, more explicit statement.
not in appearance
Uses "not in appearance" to emphasize the contrast between how something appears and how it truly is.
FAQs
How can I use "ostensibly not" in a sentence?
The phrase "ostensibly not" is used to indicate that something appears to be untrue or not the real reason. For example, "The project is ostensibly not a priority for the management, but there are signs that it is receiving more attention than expected."
What are some alternatives to "ostensibly not"?
You can use alternatives such as "apparently not", "seemingly not", or "not ostensibly" depending on the context.
Is "ostensibly not" formal or informal?
"Ostensibly not" leans towards the formal side and is more appropriate in written English or professional communication. In informal contexts, consider using alternatives like "seemingly not".
What's the difference between "ostensibly not" and "actually not"?
"Ostensibly not" implies that something appears to be untrue, while "actually not" states a fact. "Ostensibly not" introduces an element of doubt or hidden reality.
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
86%
Authority and reliability
4.5/5
Expert rating
Real-world application tested