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
well-known issue
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "well-known issue" is correct and usable in written English.
You can use it to refer to an issue that is well known among a particular group of people, either because it has been widely discussed or is a common problem. For example: "Discrimination in the workplace is a well-known issue that needs to be addressed."
✓ Grammatically correct
Science
News & Media
Alternative expressions(20)
established problem
recognized challenge
common concern
long-standing problem
well-known
extensively discussed
well talked about
popular topic
still talked about
widely discussed
widely analyzed
much written about
most talked about
subject of conversation
in the news
further talked about
well-known subject
better talked about
hotly debated
frequently mentioned
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
42 human-written examples
She noted that "virtually every well-known brand, or even well-known issue, has a communications program behind it.
News & Media
There is the well-known issue that Chinese characters don't systematically map to sounds, making both learning and remembering difficult, a point I examine in my latest column.
News & Media
What needs to be done is by now well-known: Issue European bonds, using the collective borrowing power of the European Union, and pass the low interest rates onto the countries in need, combined with a growth strategy that will engender needed revenues.
News & Media
Scalability is a well-known issue in multi-hop networking.
Chloride induced corrosion in concrete is a well-known issue.
Demand side energy consumption scheduling is a well-known issue in the smart grid research area.
Science
Human-verified similar examples from authoritative sources
Similar Expressions
18 human-written examples
One of Johnson's well-known issues of the day is his attempt to legalize marijuana.
News & Media
He adds: Of course, Moss comes with all the well-known issues, but his deal will be extraordinarily team-friendly because Moss has something to prove.
News & Media
"We don't want to spend 10 years negotiating what are well-known issues and not reach a result," Michael Froman, the U.S. deputy national security adviser for international economic affairs, said on a conference call with reporters Wednesday.
News & Media
The vast trade in shark fins and turtles will also come under attack, as will the large-scale felling of tropical rosewood and sandalwood, as well as less well-known issues such as Indonesia's huge exports of frogs' legs, and the trade in cheetahs and python skins.
News & Media
In a 2003 presentation, a propellant expert at TRW, which also made airbags with ammonium nitrate for several years in the early 2000s, outlined what he called "well-known issues" with using the compound, warning of "conditions that stimulate an explosive response".
News & Media
Expert writing Tips
Best practice
When using the phrase "well-known issue", ensure you briefly contextualize it for your audience, even if it seems obvious. This helps avoid assumptions and ensures everyone is on the same page.
Common error
Avoid using "well-known issue" repeatedly in a single piece of writing. Vary your language with synonyms to maintain reader engagement and prevent your writing from sounding monotonous.
Source & Trust
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "well-known issue" functions primarily as a noun phrase, where the adjective "well-known" modifies the noun "issue". This construction highlights that the issue in question is not new or obscure but rather commonly acknowledged.
Frequent in
Science
50%
News & Media
41%
Formal & Business
9%
Less common in
Ludwig's WRAP-UP
The phrase "well-known issue" is a common and grammatically correct way to refer to a problem or topic that is widely recognized. As Ludwig confirms, it’s suitable for various contexts, though it leans towards a neutral to formal register. It's frequently used in science, news, and business domains to introduce topics that require further discussion or analysis. While using the phrase is generally acceptable, it's crucial to provide context and avoid overusing it. Alternatives like "established problem" or "recognized challenge" can add variety and nuance to your writing. Remember to always contextualize even a "well-known issue" to ensure clarity for your audience.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
commonly known difficulty
Similar to the original phrase, but emphasizes the difficulty aspect.
widely recognized problem
Highlights the broad acknowledgment of the issue as a problem.
established problem
Focuses more on the problem's long-standing existence.
long-standing problem
Focuses on the issue's existence over a long period.
recognized challenge
Highlights the difficulty aspect and widespread acknowledgment.
generally accepted challenge
Focuses on the acceptance of the issue as a challenge.
common concern
Emphasizes that many people share the worry about the issue.
prevalent matter
Stresses the widespread nature and importance.
ubiquitous issue
Stresses the presence of the issue everywhere.
notorious difficulty
Implies the issue is famous for being problematic.
FAQs
How can I use "well-known issue" in a sentence?
You can use "well-known issue" to refer to a problem or topic that is widely recognized. For example, "Climate change is a "well-known issue" that demands immediate attention."
What are some alternatives to "well-known issue"?
Some alternatives include "established problem", "recognized challenge", or "common concern". The best choice depends on the specific context.
Is it redundant to say "widely well-known issue"?
Yes, saying "widely well-known issue" is generally considered redundant. "Well-known" already implies that something is widely known, so adding "widely" is unnecessary.
What's the difference between "well-known issue" and "emerging issue"?
"Well-known issue" refers to a problem that has been recognized and discussed for some time. In contrast, "emerging issue" describes a problem that is just beginning to gain attention or recognition.
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
82%
Authority and reliability
4.5/5
Expert rating
Real-world application tested