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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
common knowledge
Grammar usage guide and real-world examplesUSAGE SUMMARY
"common knowledge" is a correct and usable phrase in written English.
You can use it to refer to something that is widely known and accepted as true, such as, "It is common knowledge that an apple a day keeps the doctor away."
✓ Grammatically correct
News & Media
Academia
Alternative expressions(20)
widely known fact
public knowledge
generally accepted knowledge
open secret
basic understanding
conventional wisdom
a widespread misperception
Completely understood
typical viewpoint
a considerable awareness
known to male
known to folk
frequent knowledge
known to public
known to someone
well understood
duly acknowledged
recognized by humans
best understood
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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
Well, that's common knowledge.
News & Media
Common knowledge e. Connections.
News & Media
That is common knowledge.
News & Media
That's common knowledge.
News & Media
But that's common knowledge.
News & Media
It was common knowledge".
News & Media
This is common knowledge.
News & Media
It's pretty much common knowledge".
News & Media
What's common knowledge?
News & Media
"This is already common knowledge".
News & Media
Government brutality was common knowledge.
News & Media
Expert writing Tips
Best practice
Consider the audience when determining if something qualifies as "common knowledge". What is common knowledge in one field may not be in another.
Common error
Avoid assuming that your audience possesses specific knowledge. What might seem obvious to you may not be to everyone. Always provide context or cite sources when in doubt.
Source & Trust
92%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "common knowledge" functions as a noun phrase, typically serving as a subject complement or object. It describes a state of awareness or understanding shared by a group. As confirmed by Ludwig AI, this phrase is valid and widely used.
Frequent in
News & Media
48%
Academia
42%
Formal & Business
5%
Less common in
Science
3%
Encyclopedias
1%
Wiki
1%
Ludwig's WRAP-UP
The phrase "common knowledge" is a widely used and accepted term, as confirmed by Ludwig AI. It refers to information that is generally known and understood by a particular group or the public at large. While grammatically correct and frequently used in diverse contexts like News & Media and Academia, it's important to consider your audience when determining what constitutes "common knowledge" and to avoid making assumptions. Related phrases include "widely known fact" and "public knowledge". Remember to cite your sources in academic writing to ensure clarity and avoid plagiarism. Using "common knowledge" effectively enhances communication by allowing you to focus on more specific or novel points, as the basic facts are already understood.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
widely known fact
This alternative directly replaces "common knowledge" with a more descriptive phrase.
generally accepted knowledge
This phrase emphasizes the acceptance aspect of the knowledge.
public knowledge
This alternative highlights that the information is accessible to everyone.
well-known information
This phrase is a more straightforward way to express the concept.
universally acknowledged fact
This option adds emphasis on the universality and acceptance of the fact.
established truth
This phrase focuses on the truth aspect and its well-established nature.
a matter of record
This refers to something documented and readily available.
open secret
Implies that the knowledge is technically private but widely suspected or known.
basic understanding
Focuses on the fundamental nature of the knowledge.
conventional wisdom
Refers to widely held beliefs or ideas, which may or may not be accurate.
FAQs
How do you define "common knowledge" in academic writing?
"Common knowledge" refers to facts or information that are widely known and accepted as true, requiring no citation. However, it's essential to consider your audience; what's common in one field might not be in another.
When should I cite a source, even if I think it's "common knowledge"?
If there's any doubt about whether a piece of information is truly /s/widely+known+fact, it's always best to cite the source. This demonstrates academic integrity and avoids potential plagiarism.
What are some alternatives to saying "common knowledge" in writing?
You can use phrases like "widely known fact", "public knowledge", or "generally accepted knowledge" depending on the specific context.
How can I ensure that something I consider "common knowledge" is actually common?
Consider your audience's background and expertise. If you're unsure, do a quick search to see if the information is readily available from multiple sources. When in doubt, cite.
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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
92%
Authority and reliability
4.5/5
Expert rating
Real-world application tested