sure I know

USAGE SUMMARY

The phrase "sure I know" is correct and usable in written English.
It can be used to express confidence or affirmation about having knowledge of a particular subject or fact. Example: "When you asked if I was familiar with the topic, I replied, 'Sure I know, I've studied it extensively.'"

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

54 human-written examples

I'm not sure I know.

The Guardian - Books

"I'm not sure I know the answer.

The New Yorker

"I'm not quite sure I know.

The New Yorker

Sure, I know how it goes.

Independent

I make sure I know what's cooking.

The New Yorker

"Sure, I know he is," Sprewell said.

The New York Times - Sports

I'm not even sure I know how".

The New Yorker

I'm not sure I know either.

The Guardian

I'm still not sure I know what I think.

The New York Times - Arts

Human-verified similar examples from authoritative sources

Similar Expressions

2 human-written examples

"Sure, I know you, Ty," Jackson replied.

The Guardian - Sport

Because I'm no longer sure I know him.

The Guardian - Lifestyle

Expert writing Tips

Best practice

Use "sure I know" to express confidence or agreement, but be mindful of the context. It can sometimes sound informal or even sarcastic, depending on tone.

Common error

While "sure I know" is acceptable in many situations, avoid using it in highly formal writing or presentations where a more sophisticated expression of agreement or acknowledgment would be more appropriate.

Linguistic Context

The phrase "sure I know" functions primarily as an affirmative response indicating understanding or awareness. It combines an adjective ("sure") expressing certainty with a verb and pronoun ("I know") denoting knowledge. As Ludwig AI states, this phrase is grammatically correct.

Expression frequency: Very common

Frequent in

News & Media

100%

Less common in

Science

0%

Formal & Business

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, the phrase "sure I know" is a common and generally accepted way to express understanding or agreement. Ludwig AI confirms its grammatical correctness and its frequent use in News & Media. While versatile, its informal tone means it's best reserved for casual or neutral contexts, avoiding overly formal settings where alternatives like "I am aware" might be more appropriate. Remember to consider the context and your audience to choose the most effective way to convey your knowledge and confidence.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

certainly I know

Emphasizes certainty in knowing something.

definitely I know

Similar to 'certainly', but with a stronger sense of conviction.

of course I know

Implies that the knowledge is obvious or expected.

absolutely I know

Expresses complete agreement and knowledge.

I am sure I know

Adds a personal declaration of certainty.

I know for sure

Reorders the words to emphasize the certainty of the knowledge.

I am certain I know

Synonymous to 'I am sure I know'.

I undoubtedly know

Expresses a lack of doubt in one's knowledge.

I am well aware

Indicates a thorough understanding and knowledge.

I already know

Implies prior knowledge of something.

FAQs

What does "sure I know" mean?

The phrase "sure I know" is used to express agreement or affirmation that you have knowledge of something. It's a way of saying "yes, I am aware of that" or "yes, I understand".

Is "sure I know" formal or informal?

The phrase is generally considered informal and is best used in casual conversation or writing. In more formal settings, consider alternatives such as "I am aware", "I understand", or "I am familiar with that".

What are some alternative phrases to "sure I know"?

You can use alternatives like "certainly I know", "of course I know", or "absolutely I know", depending on the context and the level of formality you want to convey.

When is it inappropriate to use "sure I know"?

Avoid using "sure I know" in situations that require a high degree of formality, such as academic papers, business presentations, or formal speeches. It can come across as too casual or even sarcastic in these settings.