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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
is already known
Grammar usage guide and real-world examplesUSAGE SUMMARY
"is already known" is a grammatically correct and usable phrase in written English.
You can use this phrase when referring to information that is no longer a mystery or secret, and has already been made public. For example: The chemical composition of the newly discovered mineral is already known.
✓ Grammatically correct
Science
News & Media
Academia
Alternative expressions(20)
is well-established
is already investigated
is soon removed
is ever known
is presently known
is readily available
has been cleared
is superseded
is now known
is unfortunately known
is already given
is recognized
is already removed
is absent
is not new
is predetermined
is readily removed
has been expunged
is already terminated
has been extracted
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
Yet the main reason is already known.
News & Media
The outcome is already known.
News & Media
The information is already known to experts.
News & Media
"Besides, everything about me is already known.
News & Media
Wiggins's use of triamcinolone is already known.
News & Media
It is already known but not frequently used.
Science
and it is already known to the Tribunal.
Academia
Understanding what is already known is essential to avoid duplication.
News & Media
But there is no forgetting what is already known.
News & Media
Still, even without such testimony, much is already known.
News & Media
Seismic base isolation as seismic protection technology is already known and its development continues to grow.
Expert writing Tips
Best practice
Use "is already known" to efficiently introduce information that has been previously established or widely recognized, avoiding unnecessary repetition or lengthy explanations.
Common error
Avoid using "is already known" when the context clearly implies existing knowledge. For example, stating "The sky is blue, as is already known" is redundant; simply stating "The sky is blue" is more effective.
Source & Trust
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "is already known" functions as a discourse marker to indicate that the information being presented is not novel. Ludwig's examples demonstrate its use in various contexts to acknowledge established knowledge before introducing related details or arguments.
Frequent in
Science
42%
News & Media
38%
Academia
20%
Less common in
Formal & Business
0%
Encyclopedias
0%
Wiki
0%
Ludwig's WRAP-UP
In summary, the phrase "is already known" is a versatile tool for acknowledging established information across diverse contexts. As confirmed by Ludwig, it's grammatically sound and commonly used in science, news, and academic writing. While effective for providing context, be mindful of potential redundancy in obvious situations. Consider alternatives like "is previously established" or "is common knowledge" to enhance clarity and precision in your writing. By using it judiciously, you can ensure that your message builds effectively upon existing understanding.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
is previously established
Changes the verb to emphasize the prior establishment of something.
is a known fact
Replaces 'already known' with 'known fact' emphasizing the factual nature.
is common knowledge
Indicates that the information is widely understood.
has been established
Focuses on the act of establishing something in the past.
is well-established
Highlights the degree to which something is established.
is no secret
Indicates that something is openly known and not confidential.
is understood
Emphasizes comprehension rather than just knowledge.
is recognized
Highlights that something has been officially acknowledged.
is not new
Simply states that something lacks novelty.
is a given
Suggests something is assumed or accepted as true.
FAQs
How can I use "is already known" in a sentence?
You can use "is already known" to introduce or preface a statement that has been previously established. For example, "The link between smoking and lung cancer "is already known", so public health campaigns focus on prevention."
What can I say instead of "is already known"?
You can use alternatives like "is previously established", "is common knowledge", or "has been established" depending on the specific context.
When is it appropriate to use "is already known"?
It is appropriate to use "is already known" when you want to acknowledge that a piece of information is not new or surprising, often to set the stage for discussing new developments or nuances related to that information.
Is it redundant to use "is already known" when something is obvious?
Yes, using "is already known" when the information is extremely obvious can be redundant. In such cases, it's best to state the information directly without the preface.
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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
87%
Authority and reliability
4.5/5
Expert rating
Real-world application tested