I'm sure

USAGE SUMMARY

"I'm sure" is correct and usable in written English.
You can use it to express that you are confident or certain about something. For example, "I'm sure that the meeting will be a success."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

60 human-written examples

"I'm sure".

The New Yorker

I'm sure he did.

The New York Times

I'm sure it would".

The New York Times - Sports

I'm sure that'll happen.

The New York Times

I'm sure you understand.

The New York Times

Yes, I'm sure.

The New York Times

I'm sure they'll come.

The New York Times

I'm sure I will".

Independent

"I'm sure there are.

The New York Times

(Charmed, I'm sure).

The New York Times - Books

I'm sure of that.

The New York Times - Magazine

Expert writing Tips

Best practice

To add emphasis, follow "I'm sure" with a clarifying statement. For example, "I'm sure he'll be there; he never misses a deadline."

Common error

Avoid using "I'm sure" when the situation requires more nuanced language. If you're not entirely certain, consider phrases like "I believe" or "It's likely" to convey appropriate levels of confidence.

Linguistic Context

The phrase "I'm sure" primarily functions as an expression of confidence or certainty. It indicates that the speaker believes something to be true or will happen. Ludwig examples demonstrate its use in various contexts to convey assurance.

Expression frequency: Very common

Frequent in

News & Media

89%

Formal & Business

6%

Science

3%

Less common in

Encyclopedias

0%

Wiki

0%

Reference

0%

Ludwig's WRAP-UP

In summary, the phrase "I'm sure" is a grammatically sound and very common expression used to convey confidence or certainty. Ludwig AI confirms its correctness and usability across various contexts, primarily in news and media. While versatile, consider using more formal alternatives in academic or professional settings for enhanced precision. Remember to use "I'm sure" appropriately, avoiding overstatement and choosing it mindfully to express your level of confidence accurately.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I am certain

Changes the contraction to the full form and replaces "sure" with its synonym "certain", slightly increasing formality.

I'm quite certain

Adds "quite" to intensify the level of certainty while maintaining a similar structure.

I'm positive

Replaces "sure" with "positive", offering a direct synonym with similar impact.

I have no doubt

Replaces the expression of certainty with the negation of doubt, providing a similar meaning with a different approach.

Without a doubt

Expresses certainty by negating any possibility of doubt, creating a stronger emphasis.

I am convinced

Substitutes "sure" with "convinced", suggesting a deeper level of internal assurance.

I definitely think so

Adds emphasis with "definitely" and shifts to a thinking perspective, making it slightly less direct.

That's for sure

Changes the subject to "that" and uses "for sure" as a confirming statement, slightly altering the sentence structure.

I believe that to be true

Formalizes the statement and introduces a belief aspect, which can soften the certainty slightly.

It's my firm belief

Emphasizes the personal conviction and strength of belief.

FAQs

How can I use "I'm sure" in a sentence?

Use "I'm sure" to express confidence or certainty about something. For example, "I'm sure we'll find a solution" or "I'm sure he's already left".

What can I say instead of "I'm sure"?

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

Is it okay to use "I'm sure" in formal writing?

While "I'm sure" is generally acceptable, consider more formal alternatives like "I am certain" or "I have no doubt" in academic or professional contexts.

What's the difference between "I'm sure" and "I hope"?

"I'm sure" expresses confidence or certainty, while "I hope" expresses a desire or wish. For example, "I'm sure he'll arrive on time" indicates confidence, whereas "I hope he'll arrive on time" expresses a wish.