that are known

USAGE SUMMARY

The phrase "that are known" is correct and usable in written English.
It can be used to refer to information or facts that are recognized or acknowledged by people. Example: "The theories that are known in the scientific community often evolve as new discoveries are made."

✓ Grammatically correct

News & Media

Academia

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

And it's the problem that businesses that are known face.

University of California, Berkeley

Shown are the values that are known at processor startup.

University of California, Berkeley

But those are only the ones that are known.

The New York Times

Many sofas harbour chemicals that are known to be dangerous.

The Guardian

Again, these are just the tracks that are known.

The Washington Post

Also, try to stick to well-reputed websites that are known to pay regularly.

Stanford University

Note: not all black hole systems that are known are microquasars.

Cornell University

They test this idea by first studying ten conversations associated with hashtags that are known to be controversial and ten that are known to be benign.

MIT Technology Review

And these local galleries have flourished alongside fine-arts institutions that are known nationwide.

The New York Times - Travel

Increased energy production by mitochondria generates dangerous reactive chemicals that are known to damage cells.

The New York Times - Health

They are the only rooms he designed in Ireland that are known to exist.

The New York Times

Expert writing Tips

Best practice

Use "that are known" to introduce facts or information that is generally accepted or recognized within a specific context. For example, "the risk factors that are known to contribute to heart disease".

Common error

Avoid using "that are known" in situations where a simpler phrasing like "known" would suffice. Overusing the relative clause can make your writing sound unnecessarily verbose. For example, instead of "the issues that are known problems", try "the known problems".

Linguistic Context

The phrase "that are known" primarily functions as a relative clause, modifying a noun or noun phrase by providing additional information about it. Ludwig's examples demonstrate its usage to specify qualities, facts, or information generally recognized within a context.

Expression frequency: Very common

Frequent in

News & Media

35%

Academia

25%

Science

20%

Less common in

Formal & Business

10%

Encyclopedias

5%

Reference

5%

Ludwig's WRAP-UP

In summary, the phrase "that are known" functions as a relative clause used to specify characteristics or attributes generally recognized within a specific context. Ludwig AI confirms its grammatical correctness and widespread use across various sources, including News & Media, Academia, and Science. While highly versatile, writers should be mindful of potential redundancy and consider simpler alternatives where appropriate. By following best practices and avoiding common errors, writers can effectively use this phrase to enhance clarity and precision in their writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

that are familiar

Implies a sense of recognition due to prior exposure or experience, rather than just being acknowledged.

that are well-known

Emphasizes widespread awareness and recognition, implying popularity or common knowledge.

that are recognized

Focuses on the act of acknowledgement or acceptance, highlighting formal recognition.

that are acknowledged

Highlights the acceptance or admission of something, often in a formal setting.

that are understood

Implies a deeper level of comprehension and insight, rather than just awareness.

that are established

Suggests that something has been proven or validated over time, implying reliability.

that are documented

Emphasizes the existence of written or recorded evidence.

that are identified

Highlights the act of discovering or pinpointing something specific.

that are revealed

Suggests something was previously hidden or unknown but has now come to light.

that are public knowledge

Highlights that something is widely available and known to the general population.

FAQs

How can I use "that are known" in a sentence?

Use "that are known" to refer to facts, information, or qualities that are generally recognized or accepted within a specific context. For instance, "The side effects "that are known" to occur with this medication include nausea and dizziness".

What are some alternatives to "that are known"?

Alternatives include "that are familiar", "that are well-known", or simply "known", depending on the context. These alternatives can add nuance and avoid repetition.

Is it better to use "that are known" or simply "known"?

The choice depends on the sentence structure. "Known" can often replace "that are known" for brevity, but "that are known" is useful for adding detail or specifying a context. For instance, "known side effects" versus "side effects "that are known" to occur in clinical trials".

What's the difference between "that are known" and "that are recognized"?

"That are known" refers to information that is generally accepted or familiar, while "that are recognized" implies a formal acknowledgement or official acceptance. The choice depends on whether you want to emphasize general awareness or official recognition.