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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
not so
Grammar usage guide and real-world examplesUSAGE SUMMARY
"not so" is a common phrase used in written English.
It usually means "not as much or not as well" as the preceding phrase. For example: The pressure to perform was intense, but the rewards were not so great.
✓ 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
60 human-written examples
Not so.
News & Media
Not so, America, not so!
News & Media
"Not so much, maybe not so much.
News & Media
Not so smaller ones.
News & Media
Not so the Constitution.
News & Media
Well, not so subtle!
News & Media
Not so lucky".
News & Media
Again, not so fast.
News & Media
Not so O.K.
News & Media
Actually, not so fast.
News & Media
Not so high [pressure].
News & Media
Expert writing Tips
Best practice
Use "not so" to offer a concise and direct disagreement or correction. It is most effective when the context is already clear.
Common error
Avoid using "not so" excessively in formal academic papers or business reports. More elaborate and precise language is usually preferred in formal settings.
Source & Trust
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The primary grammatical function of "not so" is as an adverbial phrase used for negation or contradiction. It serves to directly counter a preceding statement, assertion, or assumption. Ludwig highlights numerous examples where it functions in this manner.
Frequent in
News & Media
85%
Science
8%
Formal & Business
7%
Less common in
Wiki
0%
Encyclopedias
0%
Reference
0%
Ludwig's WRAP-UP
In summary, "not so" is a common adverbial phrase used for negation and contradiction, as confirmed by Ludwig. It serves to directly counter a preceding statement or assumption. While grammatically correct and found in various contexts, it is best suited for neutral to informal communication. Ludwig AI's analysis, combined with the high frequency of examples from sources like The New York Times, The Economist, and The Guardian, shows its widespread usage and acceptability.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
that's not right
Replaces "not so" with a more explicit statement of incorrectness.
that's incorrect
Provides a direct and formal assertion of inaccuracy.
that isn't the case
Offers a more elaborate way to negate a previous statement.
it's not like that
Suggests that the situation is different from what was implied.
that's not true
Declares a statement to be false.
on the contrary
Introduces an opposing viewpoint or fact.
quite the opposite
Emphasizes that the reality is the reverse of what was stated.
actually, no
Adds a layer of surprise or correction to a negative response.
hardly
Implies that something is not true or likely.
far from it
Indicates that something is definitely not the case.
FAQs
How can I use "not so" in a sentence?
"Not so" is used to negate or contradict a previous statement, implying that something is not as it was described. For example, "You think it's easy? "Not so"!"
What's a more formal alternative to "not so"?
In formal contexts, consider using alternatives such as "that is incorrect", "that is not the case", or "on the contrary" instead of the more casual "not so".
Is "not so" grammatically correct?
Yes, "not so" is grammatically correct and commonly used in spoken and written English, particularly in informal contexts.
What does "not so fast" mean?
"Not so fast" is an idiom that means "wait a moment" or "don't be too hasty". It's used to caution someone against acting too quickly. Similar alternatives are "hold on" or "wait a minute".
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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
88%
Authority and reliability
4.6/5
Expert rating
Real-world application tested