this is known

USAGE SUMMARY

"this is known" is a perfectly correct and usable phrase in written English.
It can be used to emphasize that a certain fact or circumstance has already been identified or established. For example, "It has long been speculated that extraterrestrial life exists somewhere in the universe - this is known."

✓ Grammatically correct

News & Media

Wiki

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

This is known as impingement.

The New York Times

This is known as "endemicity".

The Economist

This is known as "sniping".

The Economist

All this is known.

The Guardian - Books

This is known as "commodity hell".

The New Yorker

This is known as intersectional discrimination.

The Guardian

This is known as the scatter force.

The Economist

This is known as lossy compression.

The New York Times

This is known as the base rate.

Independent

This is known as "filling the tree".

The New York Times

This is known as fallibilism.

SEP

Expert writing Tips

Best practice

Use "this is known" to introduce information that is widely accepted or has been previously established in the context of your writing. It adds a sense of authority and shared understanding.

Common error

Avoid starting multiple consecutive sentences with "this is known". Vary your sentence structure to maintain reader engagement and prevent your writing from sounding repetitive.

Linguistic Context

The phrase "this is known" functions as an introductory device to signal that the subsequent information is already established or widely accepted. It leverages a passive construction to emphasize the state of being known, rather than the act of knowing. Ludwig AI confirms its validity and wide range of use cases.

Expression frequency: Very common

Frequent in

Wiki

35%

News & Media

30%

Science

15%

Less common in

Formal & Business

10%

Encyclopedias

5%

Reference

5%

Ludwig's WRAP-UP

In summary, "this is known" is a versatile phrase used to introduce established information. Ludwig AI confirms its grammatical correctness and provides numerous examples demonstrating its use across diverse contexts like news, wikis, and scientific publications. While it’s generally appropriate for neutral to formal registers, it’s important to avoid overuse to maintain writing engagement. Alternatives like "it is understood" or "it's a known fact" can provide variety. As Ludwig shows, understanding the nuances of this phrase enhances clarity and authority in your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

it is understood

Emphasis on comprehension or acceptance.

it is recognized

Formal tone and suggests official acknowledgement.

this is recognized

Formal tone and suggests official acknowledgement.

it's already established

Emphasis on prior confirmation or validation.

it is common knowledge

Indicates widespread awareness of the information.

that's a given

Informal and implies the information is self-evident.

it's a known fact

Highlights the factual nature of the information.

that much is clear

Emphasizes clarity and lack of ambiguity.

this has been ascertained

Formal; suggests the information has been determined through investigation.

everyone knows this

Informal and emphasizes universal awareness.

FAQs

How can I use "this is known" in a sentence?

You can use "this is known" to introduce or reiterate a widely accepted fact or concept. For example, "The Earth is round; this is known".

What phrases are similar to "this is known"?

Similar phrases include "it is understood", "it is recognized", or "it's a known fact". Each carries a slightly different nuance.

Is it correct to say "this is know" instead of "this is known"?

No, "this is know" is grammatically incorrect. The correct phrasing is "this is known", using the past participle of the verb 'to know'.

When is it appropriate to use "this is known" in formal writing?

"This is known" is appropriate in formal writing when referring to well-established facts or principles within a specific field. Be sure that your context does not use the phrase without citing sources, if applicable.