i am sure of

USAGE SUMMARY

The phrase "I am sure of" is correct and usable in written English.
You can use it to express confidence or certainty about something. Example: "I am sure of my decision to pursue a career in medicine."

✓ Grammatically correct

News & Media

Science

Formal & Business

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

"I am sure of that".

The New Yorker

"I am sure of it".

The New York Times

"I am sure, of course," he said.

Independent

I am sure of this.

The Guardian

Here I am sure of my life.

The New York Times - Magazine

I am sure of its success".

The Guardian

I am sure of two things.

The Guardian

There is only one thing I am sure of.

The New York Times

We will sort it, I am sure of that".

The Guardian - Sport

She wants, I am sure of it, something synthetic.

The New Yorker

I make this proposition to you because I am sure of the song's popularity.

The New Yorker

Expert writing Tips

Best practice

To make your writing more concise, especially in informal contexts, consider shortening "I am sure of" to "I'm sure of".

Common error

While "I am sure of" is acceptable, overuse can make your writing sound repetitive. In formal contexts, vary your phrasing with more sophisticated alternatives such as "I am convinced that" or "I have no doubt that" for a more professional tone. For example, instead of saying "I am sure of the results", try "I am convinced that the results will be positive".

Linguistic Context

The phrase "I am sure of" functions as an assertive expression, indicating the speaker's confidence or certainty regarding a particular fact, situation, or belief. As Ludwig AI confirms, this expression is commonly used to convey a strong conviction.

Expression frequency: Very common

Frequent in

News & Media

63.33%

Science

13.33%

Formal & Business

5%

Less common in

Wiki

1.67%

Encyclopedias

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "I am sure of" is a versatile and commonly used expression to convey a high degree of certainty or confidence. Ludwig AI validates its grammatical correctness and its frequent appearance in various contexts. As demonstrated by numerous examples, this phrase functions to assert a belief or assurance. While appropriate in most situations, varying your phrasing with alternatives like "I am certain of" can enhance the style and impact of your writing.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I am absolutely certain of

Adds "absolutely" for increased emphasis on certainty.

I am certain of

Replaces "sure" with "certain", emphasizing a firm belief.

I have no doubt about

Expresses confidence by negating the possibility of doubt.

I am convinced of

Suggests a belief formed after some consideration or persuasion.

I am positive about

Uses "positive" to convey a strong feeling of certainty.

I am fully persuaded that

Indicates a complete state of being convinced.

I feel confident about

Emphasizes the feeling of assurance regarding something.

I firmly believe in

Highlights a strong and unwavering belief.

I can assure you of

Offers assurance to someone else, emphasizing reliability.

It is my firm conviction that

Presents the statement as a deeply held personal belief.

FAQs

What does "I am sure of" mean?

The phrase "I am sure of" expresses a strong belief or confidence in something. It indicates that the speaker has a high degree of certainty about a particular fact, event, or outcome.

What can I say instead of "I am sure of"?

You can use alternatives like "I am certain of", "I am convinced of", or "I have no doubt about depending on the context".

Is it correct to say "I am sure for" instead of "I am sure of"?

No, the correct preposition to use with "I am sure" in this context is "of". Saying "I am sure for" is grammatically incorrect. Always use "I am sure of" followed by the thing you are certain about.

How can I emphasize my certainty when using "I am sure of"?

You can emphasize your certainty by adding adverbs such as "absolutely", "completely", or "entirely". For example, "I am absolutely sure of it" conveys a stronger sense of conviction than simply saying "I am sure of it".