known to exist

USAGE SUMMARY

"known to exist" is correct and usable in written English.
You can use it to indicate that something is accepted by a majority of people as being true or real. For example: "The ancient city of Atlantis is known to exist."

✓ Grammatically correct

Academia

News & Media

Science

Wiki

Encyclopedias

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

No footage is known to exist.

The New York Times

Only three copies are known to exist.

Independent

No complete collection is known to exist.

Cornell University

No copies are known to exist.

Princeton University

Tregs have long been known to exist.

Stanford University

Eighty-nine plares are known to exist.

The New York Times - Arts

No original cut is known to exist.

The New York Times

Graphene is the strongest, thinnest material known to exist.

Columbia University

Two resources are known to exist in large quantities.

Massachusetts Institute of Technology

Only 17 copies are known to exist today.

The Guardian

No negative of "Falling Soldier" is known to exist.

The New York Times - Arts

Expert writing Tips

Best practice

Use "known to exist" when you want to emphasize that something's existence is generally accepted or supported by evidence. It's suitable for formal and informal contexts.

Common error

Avoid using "known to exist" in very casual conversations where simpler phrases like "exists" or "is real" might sound more natural.

Linguistic Context

The phrase "known to exist" functions as a descriptive phrase, typically modifying a noun. According to Ludwig AI, it indicates that the existence of something is established or generally accepted. It highlights a state of being recognized or confirmed.

Expression frequency: Very common

Frequent in

News & Media

36%

Academia

31%

Science

15%

Less common in

Wiki

7%

Encyclopedias

2%

Formal & Business

0%

Ludwig's WRAP-UP

The phrase "known to exist" is a versatile phrase indicating that something's existence is recognized, confirmed, or generally accepted. According to Ludwig AI, it is grammatically correct and suitable for both formal and informal contexts. While widely applicable, it's important to be mindful of the context and choose simpler alternatives in very casual settings. With its neutral register and frequent use in academic, news, and scientific domains, "known to exist" is a reliable choice for asserting factual existence in a wide range of writing scenarios.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

established to be real

Focuses on the confirmation of reality through evidence.

proven to be the case

Highlights the aspect of having been demonstrated or verified.

acknowledged as factual

Emphasizes the acceptance of something as a fact.

recognized as present

Shifts the focus to recognition and current existence.

demonstrated to be true

Concentrates on showing the veracity of something.

substantiated to occur

Highlights the act of providing evidence for an event or phenomenon.

verified as extant

Stresses the verification of something's current existence.

determined to be valid

Focuses on the judgment of something being correct or legitimate.

confirmed to be available

Highlights the confirmation of something being accessible.

ascertained to be

Emphasizes the process of finding something out for certain.

FAQs

How can I use "known to exist" in a sentence?

You can use "known to exist" to indicate that something is acknowledged or confirmed to be real. For example, "The Loch Ness Monster is rumored but not "confirmed to exist"".

What's a less formal way to say "known to exist"?

In less formal contexts, you can use phrases like "is real", "exists", or "is around" as alternatives to "known to exist".

Is it redundant to say "widely known to exist"?

While not strictly incorrect, "widely known to exist" can be slightly redundant. "Known to exist" already implies a degree of general acceptance. However, using "widely accepted" may be preferred instead of widely known.

What's the difference between "believed to exist" and "known to exist"?

"Believed to exist" implies a degree of uncertainty or faith, while "known to exist" suggests there's evidence or confirmation. For example, ghosts are often "believed to exist", while cells are "known to exist".