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Justyna Jupowicz-Kozak quote

Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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uncertain of

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "uncertain of" is correct and usable in written English.
It can be used when expressing doubt or lack of confidence about something specific. Example: "She was uncertain of her decision to move to a new city for work."

✓ Grammatically correct

News & Media

Encyclopedias

Wiki

Human-verified examples from authoritative sources

Exact Expressions

57 human-written examples

Tim was uncertain of what to do.

She seems, now, uncertain of its future.

They seemed uncertain of themselves.

News & Media

The New York Times

Uncertain of her own health.

News & Media

The New York Times

Your mind is very uncertain of time.

News & Media

The Guardian

It's messy, endless and uncertain of success.

Even now we're uncertain of its size.

News & Media

The New York Times

(He's still uncertain of all the legalities).

Yates seemed uncertain of where to go to eat.

The Army is still uncertain of the toll.

News & Media

The New York Times

He is not uncertain of what he thinks.

News & Media

The New Yorker
Show more...

Expert writing Tips

Best practice

Use "uncertain of" when you want to express a lack of confidence or knowledge about a specific fact, outcome, or situation. Ensure the object of uncertainty is clearly defined to avoid ambiguity.

Common error

Avoid using "uncertain of" with overly broad or undefined subjects. For instance, instead of saying "He was uncertain of things", specify what he was uncertain about to provide clarity and impact.

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

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

88%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "uncertain of" functions as a predicate adjective describing a state of doubt or lack of conviction. As Ludwig AI confirms, it is a correct and usable expression. Examples show it modifying individuals or entities, indicating their state of uncertainty.

Expression frequency: Very common

Frequent in

News & Media

60%

Encyclopedias

20%

Wiki

10%

Less common in

Science

5%

Formal & Business

3%

Reference

2%

Ludwig's WRAP-UP

In summary, "uncertain of" is a versatile and grammatically sound phrase used to express a state of doubt or lack of conviction. Ludwig AI confirms its correctness and usability. It is frequently found in news and media, encyclopedias, and wiki sources, indicating its widespread acceptance across various registers. For alternative phrasing, consider "unsure about", or "doubtful regarding", depending on the nuance you want to convey. When using "uncertain of", ensure the subject of uncertainty is clearly defined to avoid ambiguity.

FAQs

How can I use "uncertain of" in a sentence?

You can use "uncertain of" to express a lack of confidence or knowledge about something. For example, "She was "uncertain of" the correct answer" or "They were "uncertain of" the outcome of the experiment".

What are some alternatives to "uncertain of"?

Some alternatives to "uncertain of" include "unsure about", "doubtful regarding", or "questioning concerning". The best choice depends on the specific context and the nuance you want to convey.

Is it better to say "uncertain of" or "unsure of"?

Both "uncertain of" and "unsure of" are grammatically correct and convey a similar meaning. "Unsure of" is slightly more informal, while "uncertain of" can sound more formal. Choose the one that best fits the tone of your writing.

What's the difference between "uncertain of" and "doubtful about"?

"Uncertain of" generally implies a lack of knowledge or confidence, while "doubtful about" suggests skepticism or disbelief. You might be "uncertain of" the weather forecast, but "doubtful about" someone's honesty.

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Source & Trust

88%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: