has not been ascertained

USAGE SUMMARY

The phrase "has not been ascertained" is correct and usable in written English.
It can be used when indicating that something has not been determined or established yet. Example: "The cause of the malfunction has not been ascertained, and further investigation is required."

✓ Grammatically correct

Science

News & Media

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

48 human-written examples

The mother's gross income for the years 2008 to 2011 inclusive has not been ascertained.

The New Yorker

Alice was identified through dental records, and the cause of her death has not been ascertained.

The Guardian

However, despite its frequent use in patients with RA, its validity has not been ascertained in this population.

Physiotherapy

However, the in vivo relevance of these functional differences in the IL8 gene has not been ascertained.

Veterinary Immunology and Immunopathology

A clear influence of the presence of comonomer units on favouring the formation of the γ phase has not been ascertained.

Polymer

The researchers have only sampled it so far, in the vicinity of Galatia, Illinois, but they think it extends more than 100 miles in one direction; its width has not been ascertained.

The New York Times - Science

Human-verified similar examples from authoritative sources

Similar Expressions

12 human-written examples

A clear motive still hasn't been ascertained, but cops arrested a suspect named Oscar Morel in the East New York neighborhood of Brooklyn around 10 PM Sunday.

Vice

The names of a number of the victims who are in hospital have not been ascertained, the patients not being in a condition to give the information.

The Guardian

Basonuclin was likely an rRNA transcription regulator, but its relation to Pol I had not been ascertained previously.

Plosone

Many low-frequency alleles have not been ascertained, and even for those that were catalogued in the dbSNP database, SNPs on the genome-wide microarrays tag low-frequency variants only poorly through pairwise linkage disequilibrium [3].

Plosone

As yet, in prepubertal childhood, the interrelations between HMW adiponectin, leptin and different inflammatory adipokines, as well as the effect modification by sex and adiposity have not been ascertained in detail [11], [21], [22].

Plosone

Expert writing Tips

Best practice

Use "has not been ascertained" in formal writing when you want to convey that something is not yet definitively known or established, especially after an investigation or analysis.

Common error

Avoid using "has not been ascertained" in casual conversation or informal writing. Simpler alternatives like "isn't known" or "hasn't been found out" are more appropriate.

Linguistic Context

The phrase "has not been ascertained" functions as a verb phrase indicating a state of uncertainty or lack of definitive knowledge. As Ludwig highlights, it's used when something hasn't been established or determined.

Expression frequency: Very common

Frequent in

Science

71%

News & Media

22%

Formal & Business

7%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "has not been ascertained" is a grammatically correct and commonly used phrase, primarily found in formal and scientific contexts. Ludwig AI confirms its validity and usefulness. It indicates that something is yet to be definitively determined or discovered, often after an investigation. While versatile, simpler alternatives are more suitable for casual communication. Ludwig's examples show a strong presence in scientific literature, affirming its importance in academic and research domains.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

has not been determined

This alternative is a more direct and common synonym for "ascertained".

remains unknown

This alternative emphasizes the continued lack of knowledge.

is not yet known

This phrase stresses that the information may be discovered in the future.

has not been established

This suggests a lack of proof or confirmation.

remains to be seen

This implies that the outcome is uncertain and will be revealed later.

is yet to be discovered

This alternative highlights the potential for future discovery.

has not been identified

This indicates that the specific entity or cause is unknown.

the cause is undetermined

Focuses specifically on the lack of a determined cause.

remains unconfirmed

This suggests that the information is not yet verified or validated.

is shrouded in mystery

This alternative is more figurative, suggesting a deeper level of uncertainty.

FAQs

What does "has not been ascertained" mean?

The phrase "has not been ascertained" means that something has not been definitely determined or discovered, usually after some investigation or inquiry. It implies a state of uncertainty or lack of concrete knowledge.

What can I say instead of "has not been ascertained"?

You can use alternatives like "has not been determined", "remains unknown", or "is not yet known" depending on the context.

Is it better to say "has not been ascertained" or "has not been determined"?

Both "has not been ascertained" and "has not been determined" are correct. "Has not been ascertained" is often perceived as more formal, while "has not been determined" is more common and widely understood.

How do I use "has not been ascertained" in a sentence?

You can use "has not been ascertained" to indicate that a fact, cause, or outcome is currently unknown. For example: "The cause of the error has not been determined", or "Whether the new policy will be effective "remains to be seen"".