is not ascertained

USAGE SUMMARY

The phrase "is not ascertained" is correct and usable in written English.
It can be used in contexts where the certainty or clarity of information is being discussed, indicating that something has not been determined or confirmed. Example: "The cause of the issue is not ascertained, and further investigation is required."

✓ Grammatically correct

Science

News & Media

Human-verified examples from authoritative sources

Exact Expressions

17 human-written examples

"A lot of that income – an increasing share of it, in fact – is not ascertained in the I.R.S. statistics that Piketty-Saez use to measure income.

The New York Times

However, its physiological significance for other photosynthesizing organisms, including higher plants, is not ascertained finally [11].

Nanoscale Research Letters

These microorganisms are not established and hence the substrate they degrade and utilize is not ascertained.

International Journal of Recycling of Organic Waste in Agriculture

In Theorem 4.1, as for finite-time stability and boundedness, once the state bound c 2 is not ascertained, the minimum value c 2 min is of interest.

Advances in Difference Equations

Quantum dots (QDs) are utilised in imaging diagnostics, tissue engineering and medical therapeutics, however, their influence on vascular function is not ascertained.

Nanomedicine: Nanotechnology, Biology and Medicine

In Theorem 4.1, as for finite-time stability and boundness, once the state bound c 2 is not ascertained, the minimum value c 2 min is of interest.

Advances in Difference Equations

Human-verified similar examples from authoritative sources

Similar Expressions

43 human-written examples

However, causal relation of headache aggravation after sumatriptan spray was not ascertained in that study.

The Journal of Headache and Pain

In subsequent rounds, whether drivers ever planned on resuming driving if they had not driven in the previous year was not ascertained.

Injury Epidemiology

However, the genetic basis of quantitative resistance to insect pests was not ascertained due to complex inheritance of the trait and limitations of conventional genetic tools.

Rice

However, significant differences in FABP7 levels by 21-day mortality were not ascertained after adjusting for significant covariates reflecting severity of illness (MELD, vasopressor dependence).

Annals of Intensive Care

However, significant differences in FABP7 levels by 21-day mortality were not ascertained after adjusting for significant covariates (reflecting severity of illness).

Annals of Intensive Care

Expert writing Tips

Best practice

Use "is not ascertained" when you want to indicate that something has not been definitely established or confirmed, often implying that further investigation is needed.

Common error

Avoid using "is not ascertained" in casual conversation or informal writing. Opt for simpler phrases like "is not known" or "is unclear" for better clarity and tone.

Linguistic Context

The phrase "is not ascertained" functions as a declarative statement expressing a lack of definite knowledge or confirmation about something. Ludwig AI confirms its usability in written English. The examples show it in various contexts, mainly scientific and formal.

Expression frequency: Common

Frequent in

Science

85%

News & Media

9%

Formal & Business

3%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, "is not ascertained" is a phrase used to express uncertainty or a lack of definitive confirmation, predominantly in formal and scientific contexts. As Ludwig AI specifies, its correct and usable in written English. While grammatically sound and widely accepted in academic and professional settings, it is advisable to use simpler alternatives like "is not known" or "is unclear" in informal communication. The primary function is to convey the need for further investigation, and related phrases such as "is not determined" or "is not established" can provide suitable substitutes depending on the nuance required.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

is not determined

Focuses on the lack of a final decision or conclusion.

is not established

Emphasizes the absence of proof or validation.

is not confirmed

Highlights the lack of verification or corroboration.

is not known

Simply states that the information is unavailable.

remains unclear

Indicates a lack of clarity or understanding.

is yet to be determined

Suggests that the determination is pending.

has not been established

Similar to "is not established" but uses a different tense.

is not verified

Focuses specifically on the lack of verification.

is uncertain

A more concise way of expressing uncertainty.

cannot be confirmed

Highlights the impossibility of confirmation.

FAQs

What does "is not ascertained" mean?

The phrase "is not ascertained" means that something is not definitely known, established, or confirmed. It indicates a state of uncertainty or a lack of conclusive evidence.

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

You can use "is not ascertained" to indicate that information is uncertain. For example: "The cause of the problem "is not ascertained", and further investigation is needed."

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

You can use alternatives like "is not determined", "is not established", or "is not confirmed" depending on the context.

Is "is not ascertained" formal or informal?

"Is not ascertained" is generally considered a formal phrase. It is more common in academic, scientific, and professional writing than in casual conversation.