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
are well-known
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "are well-known" is correct and usable in written English.
It can be used to describe something that is widely recognized or familiar to many people. Example: "The theories of Albert Einstein are well-known in the field of physics."
✓ Grammatically correct
News & Media
Science
Encyclopedias
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
9 human-written examples
The next 14 years are well-known.
News & Media
Some of the reasons are well-known.
News & Media
The statistics are well-known.
News & Media
Turtles are well-known reservoirs for salmonella.
News & Media
Its problems are well-known.
Science
The facts are well-known.
News & Media
Human-verified similar examples from authoritative sources
Similar Expressions
50 human-written examples
Many examples are well known.
News & Media
Suzuki's accomplishments are well known.
News & Media
These tragedies are well known.
News & Media
The candidates are well known.
News & Media
The issues are well known.
News & Media
Expert writing Tips
Best practice
Use "are well-known" to indicate that information or concepts are generally familiar to your audience, establishing a common ground for further discussion.
Common error
Avoid using "are well-known" when the information is actually specialized or not widely disseminated. Overusing this phrase can sound presumptive and alienate readers who are not familiar with the topic.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "are well-known" functions as a descriptive adjective phrase. As Ludwig AI confirms, it is used to modify a noun, indicating that the noun is widely recognized or familiar. It often appears before a subject to introduce common knowledge, as shown in the Ludwig examples.
Frequent in
News & Media
62%
Encyclopedias
20%
Science
18%
Less common in
Formal & Business
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
In summary, the phrase "are well-known" functions as an adjective phrase used to describe something that is widely recognized or familiar. As Ludwig AI states, the phrase is correct and usable in written English. It's commonly found in News & Media, Science, and Encyclopedias. To maintain effective communication, avoid overusing the phrase or applying it to niche topics. For variety, consider alternatives like "are widely recognized" or "are commonly known". Being mindful of these nuances ensures clarity and prevents potential audience alienation.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
are widely recognized
Emphasizes broad acceptance or acknowledgement.
are commonly known
Highlights the commonness of the knowledge.
are generally accepted
Focuses on the acceptance of something as true or valid.
are familiar
Indicates a state of being known from long or close association.
are established
Suggests something is firmly recognized or long-standing.
are widely understood
Focuses on comprehension by a large number of people.
are recognized by many
Highlights that a considerable number of people acknowledge something.
are no secret
Indicates the lack of confidentiality about something.
are a matter of public record
Emphasizes the official and accessible nature of the information.
are household names
Implies widespread recognition, especially among the general public.
FAQs
How can I use "are well-known" in a sentence?
You can use "are well-known" to describe facts, figures, or concepts that are commonly understood or recognized. For example, "The risks of smoking are well-known" or "The benefits of exercise "are widely recognized"".
What are some alternatives to "are well-known"?
Alternatives include "are widely recognized", "are commonly known", or "are generally accepted". The best choice depends on the specific context and the nuance you want to convey.
When is it appropriate to use "are well-known"?
Use "are well-known" when referring to information that is generally acknowledged and understood by a broad audience. Avoid using it when discussing niche or specialized topics that may not be familiar to everyone.
Is it redundant to say "are well-known to everyone"?
Yes, saying "are well-known to everyone" is generally redundant, as "are well-known" already implies a wide level of familiarity. Consider using simply "are well-known" or rephrasing to emphasize the extent of knowledge, such as "are universally acknowledged".
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