could have ascertained

USAGE SUMMARY

The phrase "could have ascertained" is correct and usable in written English.
It can be used to indicate that someone had the opportunity or ability to find out or determine something in the past. Example: "If he had paid closer attention, he could have ascertained the truth behind the situation."

✓ Grammatically correct

News & Media

Science

Academia

Human-verified examples from authoritative sources

Exact Expressions

1 human-written examples

"As long as he is in compliance with the law, that's fine with me," Mr. Bloomberg said, a fact he could have ascertained before starting a smear campaign.

The New York Times

Human-verified similar examples from authoritative sources

Similar Expressions

59 human-written examples

During 1972 73 in the region of North West England covered by the Manchester Children's Tumour Registry (MCTR), 91% of known childhood cancer cases were ascertained to the MCTR from Hospital Activity Analysis records (a predecessor of HES), 93% from the regional CR, and 93% from clinicians; 98 99% could have been ascertained from any two of these three sources (Leck et al, 1976).

British Journal of Cancer

The administration should have held off until the true impact of its rules could have been ascertained.

The New York Times

Indeed, the acceptance of volunteers for the juries had received publicity in the newspapers, and their presence on the petit jury could have been ascertained at the time it was constituted.

Cornell University

"Treating our country in such way, as Washington could have already ascertained, is inappropriate and counterproductive," the statement said.

Huffington Post

It should be noted, however, that the retrospective nature of our investigation removed any Hawthorne bias with regard to performance, and therefore may provide a truer depiction of procedural dynamics than could have been ascertained through prospective methods.

BMJ Open

Having ascertained where Weyman could be found, Bannerman took up with the Naval Intelligence people in New York the matter of bringing about the impostor's arrest for impersonating a naval officer.

The New Yorker

It is clear and unambiguous and the parties understood the terms thereof, and the approximate cost of fulfilling the obligations could have been approximately ascertained.

Harvard University

Previous work done in those attending a specialist vascular laboratory in the US demonstrated that patients could have their ABI reliably ascertained by such devices compared to the conventional use of a Doppler ultrasound and mercury sphygmomanometer.

BMJ Open

In doing so, I suspect that authors would have missed spring and summer feeders, such as the winter moth for example, whose damage could have been difficult to ascertain and differentiate from other herbivores when herbivore damage was examined in the fall.

F1000Research

For instance, the Belgian court ruling on Ms Achbita's case would need to ascertain whether it could have been possible to offer her another post not involving visual contact with customers.

BBC

Expert writing Tips

Best practice

Use "could have ascertained" when you want to emphasize the potential or possibility that someone had the means to find something out, whether or not they actually did. For example: "With more investigation, they "could have ascertained" the source of the error."

Common error

Avoid using "could have ascertained" in situations where simpler alternatives like "could have found out" or "could have learned" would suffice. Overusing formal language can make your writing sound pretentious. Choose the phrasing that best fits the tone and audience.

Linguistic Context

The phrase "could have ascertained" functions as a modal verb phrase indicating a past possibility or potential action. It suggests that someone had the ability or opportunity to determine something, but it's not confirmed whether they actually did. Ludwig provides several examples showing its usage in various contexts.

Expression frequency: Very common

Frequent in

Science

35%

News & Media

35%

Academia

30%

Less common in

Formal & Business

0%

Encyclopedias

0%

Wiki

0%

Ludwig's WRAP-UP

In summary, the phrase "could have ascertained" is a modal verb phrase indicating a past possibility of determining something, typically used in formal contexts such as scientific and academic writing. As Ludwig AI confirms, the phrase is grammatically correct and commonly used. While there are various synonyms like "could have determined" and "could have discovered", choosing the right one depends on the specific nuance you want to convey. When writing, be mindful of using simpler alternatives if the context is informal. It should also be noted that a balanced distribution of contexts for frequent and less common contexts indicates a broad and reliable representation of the phrase's usage across diverse domains.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

could have determined

Replaces "ascertained" with a more common synonym.

could have discovered

Focuses on the finding of something rather than the process of determining it.

could have found out

An informal alternative using a phrasal verb.

could have learned

Emphasizes the acquisition of knowledge.

could have established

Highlights the act of confirming or proving something.

could have verified

Focuses on confirming the truth or accuracy of something.

could have confirmed

Similar to 'verified' but slightly more formal.

could have identified

Emphasizes the recognition or pinpointing of something.

could have figured out

An informal alternative to "ascertained".

could have understood

Focuses on gaining comprehension.

FAQs

What does "could have ascertained" mean?

The phrase "could have ascertained" means that someone had the ability or opportunity to find something out or determine it with certainty, but it is not certain whether they actually did so.

What can I say instead of "could have ascertained"?

You can use alternatives like "could have determined", "could have discovered", or "could have found out" depending on the context.

How do you use "could have ascertained" in a sentence?

You can use "could have ascertained" to indicate that someone had the capability to find something out. For example: "If the data had been analyzed more closely, the researchers "could have ascertained" the cause of the problem."

Is "could have ascertained" formal or informal?

"Could have ascertained" is generally considered a formal phrase. In less formal contexts, you might prefer alternatives like "could have found out" or "could have learned".