is sure of

USAGE SUMMARY

The phrase "is sure of" is correct and usable in written English.
It can be used to express confidence or certainty about something. Example: "She is sure of her decision to pursue a new career path."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

He is sure of that.

The New York Times - Sports

He is sure of one thing.

The New York Times

Nobody is sure of the exact count.

The New York Times

He is sure of that much.

The New York Times - Sports

Cleary is sure of one thing.

The New York Times

Rajoy is sure of one thing.

The Guardian

He is sure of a rapturous reception.

The Guardian - Sport

Not quite everyone is sure of a Democratic landslide.

The New Yorker

But he is sure of this: he needs a master's.

The New York Times

He is not graceful, but he is sure of himself.

The New Yorker

But no one is sure of exact numbers.

The Economist

Expert writing Tips

Best practice

Use "is sure of" when you want to express a strong belief or confidence in something. Ensure the context clearly supports the level of certainty you are conveying.

Common error

Avoid using "is sure of" when the situation involves a degree of uncertainty or speculation. Opt for phrases like "believes" or "suspects" to reflect a more nuanced perspective.

Linguistic Context

The phrase "is sure of" functions as a predicate adjective expressing a state of certainty or confidence. As Ludwig AI confirms, it's grammatically correct and widely used. It connects a subject to the adjective "sure", indicating the subject's conviction about something.

Expression frequency: Very common

Frequent in

News & Media

67%

Science

18%

Wiki

5%

Less common in

Formal & Business

3%

Encyclopedias

1%

Reference

1%

Ludwig's WRAP-UP

In summary, "is sure of" is a grammatically correct and very common phrase used to express certainty or confidence. Ludwig AI confirms its validity and wide applicability. It's suitable for various registers, particularly in News & Media, and offers versatile alternatives such as "is certain about" and "is convinced of". When using this phrase, ensure the context aligns with the level of certainty you intend to convey, and avoid overstating when uncertainty exists.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

is certain about

Uses "certain" instead of "sure", implying a firm belief.

is convinced of

Emphasizes a strong belief based on evidence or persuasion.

has no doubt about

Indicates a complete lack of uncertainty.

is positive about

Conveys a confident and optimistic feeling.

is confident in

Highlights a strong belief in someone or something's abilities.

believes strongly in

Emphasizes the intensity of the belief.

is persuaded that

Suggests a belief formed through reasoning or influence.

is under the impression that

Implies a belief based on incomplete or indirect information.

takes it for granted that

Indicates a belief accepted without question.

assumes as a matter of course that

Highlights a belief based on routine or expectation.

FAQs

How can I use "is sure of" in a sentence?

You can use "is sure of" to express certainty about something, such as "He is sure of his decision" or "She is sure of her abilities."

What's a good alternative to "is sure of"?

Alternatives to "is sure of" include "is certain about", "is convinced of", or "has no doubt about". The best choice depends on the specific context.

Is it better to say "is sure of" or "is certain of"?

"Is sure of" and "is certain of" are largely interchangeable. "Certain" often implies a slightly stronger degree of conviction, but the difference is minimal in most cases.

Can "is sure of" be used with both people and things?

Yes, "is sure of" can be used with both people and things. For example, "She is sure of him" (a person) and "He is sure of the facts" (a thing).