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
knowledge are needed
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "knowledge are needed" is not correct in written English.
It should be "knowledge is needed" since "knowledge" is an uncountable noun. Example: "In this field, knowledge is needed to make informed decisions."
⚠ May contain grammatical issues
Science
Academia
News & Media
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
New approach and new specific knowledge are needed to develop such a system.
Science
What new skills and new knowledge are needed by reporters and editors assigned to cover the "cyber-beat"?
As his adroit performance revealed, skill and knowledge are needed in the flea circus business, but "training", he said, is not so important.
News & Media
Now we are beginning to recognise that other types of knowledge are needed alongside this information – knowledge from the humanities, from spirituality and ethics.
Academia
What kinds of teaching, courses, spaces and knowledge are needed?
Academia
To conclude, improving farmers' asset accumulation, access to information and knowledge are needed.
Human-verified similar examples from authoritative sources
Similar Expressions
42 human-written examples
what new knowledge is needed?
Academia
Some basic computer programming knowledge is needed to do this.
Academia
More knowledge is needed about supporting children during these procedures.
Science
We had to satisfy ourselves that no specialist tools or knowledge were needed.
News & Media
A large body of complementary knowledge was needed to implement these technologies.
News & Media
Expert writing Tips
Best practice
Ensure subject-verb agreement. Since "knowledge" is an uncountable noun, use the singular form "is" instead of "are".
Common error
Avoid using plural verb forms with uncountable nouns like "knowledge". Always use the singular form, as in "knowledge is needed", not "knowledge are needed".
Source & Trust
83%
Authority and reliability
3.8/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "knowledge are needed" functions as a statement indicating a requirement. Although grammatically incorrect, Ludwig shows that it's used in various contexts, implying a perceived need for information, skills, or understanding.
Frequent in
Science
47%
News & Media
26%
Academia
21%
Less common in
Formal & Business
5%
Encyclopedias
1%
Wiki
0%
Ludwig's WRAP-UP
While frequently used, the phrase "knowledge are needed" is grammatically incorrect; the correct form is "knowledge is needed". This is because "knowledge" is an uncountable noun and requires a singular verb. Despite the grammatical error, Ludwig's examples show it appears across diverse sources, including science, news, and academia. When writing, ensure subject-verb agreement and consider using alternative phrases like "expertise is needed" or "understanding is needed" to maintain grammatical accuracy and clarity. Though present across various domains, stick to "knowledge is needed" to ensure correctness.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
knowledge is required
Changes the verb conjugation to match the singular noun "knowledge", making the phrase grammatically correct.
knowledge is necessary
Replaces "needed" with a synonym, maintaining the intended meaning while correcting the grammar.
skills and knowledge are required
Emphasizes the combination of skills and knowledge, requiring a plural verb conjugation.
expertise is needed
Substitutes "knowledge" with "expertise", a similar term that also takes a singular verb.
a knowledge base is needed
Shifts the focus to the structure or system of knowledge, which requires a singular verb.
there is a need for knowledge
Rephrases the sentence to emphasize the existence of a requirement for knowledge.
understanding is needed
Replaces "knowledge" with "understanding", indicating a need for comprehension.
insight is necessary
Uses "insight" instead of "knowledge", suggesting a need for deeper perception.
information is needed
Focuses on the requirement for "information", which can be a component of knowledge.
more research is needed
Implies the need for further investigation to gain more knowledge.
FAQs
What's the correct way to say "knowledge are needed"?
The correct way to phrase it is "knowledge is needed" because "knowledge" is an uncountable noun and takes a singular verb.
What can I say instead of "knowledge are needed"?
You can use alternatives like "expertise is needed", "understanding is needed", or "information is needed", depending on the specific context.
Which is correct, "knowledge are needed" or "knowledge is needed"?
"Knowledge is needed" is the grammatically correct option. The phrase "knowledge are needed" is incorrect because "knowledge" is a singular, uncountable noun.
How does the context influence the choice between "knowledge is needed" and other alternatives?
The context dictates which synonym best fits. For instance, if you're referring to a specific skill, "expertise is needed" might be more appropriate. If you're emphasizing comprehension, "understanding is needed" would be a better choice.
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
83%
Authority and reliability
3.8/5
Expert rating
Real-world application tested