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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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unclear of

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "unclear of" is not correct in standard written English.
The correct expression is "unclear about." Example: "I am unclear about the requirements for the project."

⚠ May contain grammatical issues

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

"Because they are unclear of their intentions".

Most unclear of all was the expected result.

News & Media

Independent

It is unclear, of course, whether the world needs another encyclopedia.

Tom Inns, the school's director, is unclear of its future role.

It is still unclear, of course, if the Kerry drive here among veterans will yield votes.

News & Media

The New York Times

Just how much the demand for financial innovation will fade is unclear, of course.

News & Media

The New York Times

It is unclear, of course, what might come of this whistle-blower complaint.

News & Media

The New York Times

IT is unclear, of course, how these court cases will turn out.

News & Media

The New York Times

It is unclear, of course, whether an increase in reserves is in the cards for CVB.

News & Media

The New York Times

It is unclear, of course, if advertisers will be able to produce shows that will hold consumer attention.

News & Media

The New York Times

In the meantime, players contracted for as many as four more years are unclear of their futures.

Show more...

Expert writing Tips

Best practice

When expressing a lack of understanding, consider the nuance you want to convey. "Uncertain" emphasizes doubt, while "vague" points to a lack of detail.

Common error

The most frequent error is using the preposition "of" instead of "about" after "unclear." Double-check your preposition choice and use "unclear about" to ensure grammatical accuracy.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

82%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "unclear of" functions as a prepositional phrase, typically modifying a verb or noun to express a state of uncertainty or lack of understanding. Ludwig's examples show it frequently used to describe someone's state of mind or a situation's ambiguity. However, this construction is considered non-standard.

Expression frequency: Very common

Frequent in

News & Media

54%

Science

37%

Wiki

2%

Less common in

Formal & Business

0%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, while the phrase "unclear of" appears frequently across various sources, including news and scientific publications, it is generally considered grammatically incorrect in standard written English. As Ludwig AI indicates, the correct and preferred alternative is "unclear about" or "unsure of". To maintain grammatical correctness, especially in formal writing, it is best to avoid using "unclear of" and instead opt for the more accepted alternatives. Understanding the nuances of prepositional usage will enhance clarity and credibility in your writing.

FAQs

What is the correct preposition to use after "unclear"?

The correct preposition to use after "unclear" is "about". While some instances of "unclear of" exist, they are generally considered grammatically incorrect. Therefore, use "unclear about".

Is "unclear of" ever grammatically correct?

In standard English, "unclear of" is generally considered incorrect. The correct and widely accepted form is "unclear about". It's best to avoid "unclear of" in formal writing.

What can I say instead of "unclear of"?

Instead of "unclear of", you can use alternatives like "unclear about", "unsure of", or "uncertain about" depending on the specific context.

What's the difference between "unclear of" and "unsure of"?

"Unclear of" is generally considered grammatically incorrect, while "unsure of" is a correct and commonly used phrase to express a lack of certainty. Always opt for "unsure of" in formal writing.

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Source & Trust

82%

Authority and reliability

2.8/5

Expert rating

Real-world application tested

Most frequent sentences: