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
not useful
Grammar usage guide and real-world examplesUSAGE SUMMARY
"not useful" is correct and usable in written English.
You can use it to describe something that is ineffective or of no value. For example, "This tool is not useful for cutting metal."
✓ Grammatically correct
News & Media
Academia
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
"For us, they are not useful.
News & Media
Not useful categories.
News & Media
"It's not useful!
News & Media
"But it's not useful.
News & Media
These are not useful comparisons.
News & Media
Are they not useful?
News & Media
That's not useful.
Academia
Caution: not useful.
This subject is not useful.
News & Media
Weak ties are not useful.
News & Media
It is not useful to me.
News & Media
Expert writing Tips
Best practice
When writing, replace the phrase "not useful" with a more precise synonym to better convey the specific reason why something lacks utility (e.g., "ineffective", "irrelevant", "obsolete").
Common error
Avoid using "not useful" as a catch-all phrase to dismiss ideas or tools. Instead, provide specific reasons or examples to explain why something is ineffective or unsuitable for the given context. This adds credibility and provides constructive feedback.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "not useful" functions primarily as an adjective phrase that modifies a noun, indicating that the noun lacks utility or effectiveness. Ludwig AI confirms its grammatical correctness and usability. It is used to express that something does not serve its intended purpose or provide a benefit in a given situation.
Frequent in
News & Media
40%
Academia
30%
Science
20%
Less common in
Formal & Business
10%
Reference
0%
Encyclopedias
0%
Ludwig's WRAP-UP
The phrase "not useful" is a common and grammatically correct way to express that something lacks utility or effectiveness. Ludwig AI confirms its widespread use across various domains, including news, academia, and science. While versatile, refining your language with more specific synonyms like "ineffective" or "irrelevant" can add precision to your writing. Remember to avoid using "not useful" as a general dismissal; instead, provide concrete reasons for your assessment.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
of no use
Prepositional phrase conveying a lack of utility.
ineffective
Single adjective conveying lack of effectiveness.
unproductive
Single adjective describing something that doesn't yield results.
serves no purpose
Verbal phrase emphasizing lack of function.
pointless
Single adjective suggesting a lack of purpose or value.
fruitless
Single adjective indicating a lack of positive outcome.
doesn't help
Verbal phrase suggesting a lack of assistance.
inapplicable
Single adjective expressing that something does not apply or is not relevant.
futile
Single adjective suggesting something incapable of producing any result.
unavailing
Single adjective that means achieving little or nothing.
FAQs
How can I use "not useful" in a sentence?
You can use "not useful" to describe something that does not provide a benefit or serve a purpose in a specific context. For example: "That approach is "not useful" in this situation."
What are some alternatives to saying "not useful"?
Alternatives include "ineffective", "impractical", "irrelevant", or "pointless", depending on the specific meaning you want to convey.
Is it better to say "not useful" or "useless"?
"Not useful" and "useless" are often interchangeable, but "not useful" can sometimes imply a situational lack of utility, whereas "useless" often suggests a more general lack of value.
Can "not useful" be considered negative?
Yes, "not useful" generally carries a negative connotation, as it indicates a lack of benefit or effectiveness. However, the degree of negativity can depend on the context.
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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested