Used and loved by millions

Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

MitStanfordHarvardAustralian Nationa UniversityNanyangOxford

cannot be done

Grammar usage guide and real-world examples

USAGE SUMMARY

"cannot be done" is a grammatically correct sentence that is commonly used in written English.
An example sentence might be, "The proposed task simply cannot be done in the time allotted."

✓ Grammatically correct

News & Media

Academia

Science

Formal & Business

Wiki

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

It just cannot be done".

News & Media

Independent

"It cannot be done individually".

News & Media

The New York Times

Surely, it cannot be done.

News & Media

Independent

That cannot be done.

This cannot be done fast.

News & Media

The New York Times

"It cannot be done," he said quietly.

News & Media

The New Yorker

But sometimes it cannot be done.

And still, it cannot be done.

News & Media

The New Yorker

This job cannot be done without research.

Show more...

Human-verified similar examples from authoritative sources

Similar Expressions

2 human-written examples

It cannot be done on the Internet.

News & Media

Los Angeles Times

They cannot be done as originally envisaged.

News & Media

BBC

Expert writing Tips

Best practice

When using "cannot be done", ensure that the context clearly explains why something is impossible or unachievable. Be specific to enhance clarity.

Common error

Avoid using "cannot be done" when you mean "is difficult" or "requires significant effort". Reserve it for situations that are genuinely impossible under current circumstances.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "cannot be done" functions as a declarative statement expressing impossibility or infeasibility. Ludwig examples showcase its use across diverse contexts, reinforcing its role in conveying that a specific action or task is not achievable.

Expression frequency: Very common

Frequent in

News & Media

62%

Academia

18%

Science

10%

Less common in

Formal & Business

6%

Wiki

4%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "cannot be done" is a grammatically correct and very common expression used to indicate impossibility or infeasibility. As Ludwig shows, it appears frequently in News & Media, Academia, and Scientific contexts. While generally neutral in register, more formal alternatives may be preferred in certain settings. When using this phrase, clarity and specificity are key to effectively communicating the reasons behind the impossibility.

FAQs

How can I use "cannot be done" in a sentence?

Use "cannot be done" to express impossibility. For example: "Replicating the experiment exactly "cannot be done" due to variations in environmental conditions."

What are some alternatives to saying "cannot be done"?

Alternatives include "is not possible", "is unachievable", or "is out of the question", depending on the specific nuance you want to convey.

When is it appropriate to use "cannot be done"?

It's appropriate when describing situations where an action or outcome is fundamentally impossible given the current constraints or conditions. Don't use it if something is merely difficult or requires a lot of effort.

Is "cannot be done" formal or informal?

The phrase "cannot be done" is suitable for both formal and informal contexts. However, in very formal writing, you might opt for alternatives like "is not feasible" to maintain a more elevated tone.

ChatGPT power + Grammarly precisionChatGPT power + Grammarly precision
ChatGPT + Grammarly

Editing plus AI, all in one place.

Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.

Source & Trust

85%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: