is not established

USAGE SUMMARY

The phrase "is not established" is correct and usable in written English.
It can be used to indicate that something has not been confirmed, recognized, or set up yet. Example: "The protocol for the new system is not established, so we need to create one before implementation."

✓ Grammatically correct

Science

News & Media

Encyclopedias

Academia

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

A trend is not established yet".

The New York Times

However, its specific role in glucose metabolism is not established.

Stanford University

Whether a similar effect occurs in humans is not established.

Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology

In some cases the cause is not established.

Encyclopedia Britannica

Isoflavone preparations appeared less effective, and their long-term safety is not established.

The New York Times - Health

That appearance is not established by mere expression of political opinion or activism.

The Washington Post

The state independent nature of neuropsychological deficits in OCD is not established.

Progress in Neuro-Psychopharmacology and Biological Psychiatry

The role of viral infections in preterm prelabor rupture of the membranes (PPROM) is not established.

Journal of Clinical Virology

Background: The optimal management of adenoma of the major duodenal papilla is not established.

Gastrointestinal Endoscopy

However, evidence of reduced mortality and morbidity with the use of LDCT is not established.

Lung Cancer

"Your success in a new field is not established," she said.

The New York Times

Expert writing Tips

Best practice

When using "is not established", ensure that the context clearly indicates what lacks confirmation or proof. Providing context helps avoid ambiguity and strengthens your argument.

Common error

Avoid using "is not established" when there's strong evidence suggesting something is likely true, even if definitive proof is lacking. Choose a more nuanced phrase like "remains to be fully established" instead.

Linguistic Context

The phrase "is not established" functions as a qualifier, indicating that a particular fact, process, or relationship lacks sufficient evidence, confirmation, or formal recognition. Ludwig AI confirms its use in various contexts to express uncertainty or a need for further validation.

Expression frequency: Very common

Frequent in

Science

60%

News & Media

20%

Academia

10%

Less common in

Encyclopedias

7%

Formal & Business

3%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "is not established" is a common and grammatically correct way to express a lack of confirmation, proof, or formalization. As Ludwig AI confirms, it's frequently used in scientific, news, and academic contexts. When writing, ensure you provide sufficient context to clarify what exactly is not established. While versatile, avoid overstating uncertainty when evidence suggests something is likely true. By understanding its nuances and usage, you can effectively convey the degree of uncertainty in your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

has not been proven

Focuses on the lack of empirical evidence or verification.

remains unconfirmed

Highlights the absence of official confirmation or validation.

is yet to be determined

Emphasizes that a decision or conclusion is still pending.

is not yet known

Highlights the absence of current knowledge or awareness.

is still uncertain

Indicates a level of doubt or ambiguity.

lacks validation

Focuses on the absence of supporting evidence or approval.

has not been formalized

Emphasizes the lack of official or structured recognition.

is not verified

Highlights the absence of confirmation of truth or accuracy.

remains to be seen

Indicates that the outcome or result is still in the future and unknown.

is under investigation

Focuses on the ongoing process of inquiry or examination.

FAQs

What does "is not established" mean?

The phrase "is not established" means something hasn't been proven, confirmed, or formally recognized. It implies a lack of certainty or validation.

How can I use "is not established" in a sentence?

You can use "is not established" to indicate that a fact, theory, or process lacks sufficient evidence or formal recognition. For example: "The long-term safety of this medication "is not established"."

What can I say instead of "is not established"?

You can use alternatives like "has not been proven", "remains unconfirmed", or "is yet to be determined" depending on the specific context.

What is the difference between "is not established" and "is unknown"?

"Is not established" implies a lack of formal confirmation or proof, while "is unknown" simply means the information is not currently available or discovered. "Is not established" suggests a need for validation, while "is unknown" implies a gap in knowledge. "Whether FBL17 is a direct target of E2Fs, however, "is not established" yet."