of course I know

USAGE SUMMARY

"of course I know" is correct and usable in written English.
You can use it when you want to express certainty about something that you know. Example: "Do you know when the meeting is?" "Of course I know – it's at 3pm."

✓ Grammatically correct

News & Media

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

Of course I know this is not in the offing.

Huffington Post

Of course I know.

The New Yorker

Of course I know Mickle.

The Guardian

Of course I know ER.

The Guardian - TV & Radio

But of course I know better.

The Guardian - Travel

"Of course I know," she says.

The Guardian

"Of course I know who you are".

The Guardian - Books

And, of course, I know them all.

The New York Times

He tweeted "Of course I know the airport security rules.

Independent

And, of course, I know death's a pretty simple business.

The New Yorker

Human-verified similar examples from authoritative sources

Similar Expressions

1 human-written examples

"I said, 'Of course I know he's an atheist.

The New York Times

Expert writing Tips

Best practice

When using "of course I know", ensure that your tone doesn't come across as condescending or dismissive. The context and your delivery are crucial in ensuring a positive interaction.

Common error

Avoid using "of course I know" excessively in a conversation. Overuse can make you sound arrogant or as if you are trying to dominate the discussion, even if that's not your intention.

Linguistic Context

The phrase "of course I know" primarily functions as an affirmative response indicating prior knowledge or understanding. It's used to confirm that the speaker is already aware of something. Ludwig's examples show its common usage in everyday conversations and media.

Expression frequency: Very common

Frequent in

News & Media

100%

Less common in

Formal & Business

0%

Science

0%

Encyclopedias

0%

Ludwig's WRAP-UP

In summary, "of course I know" is a common and grammatically sound phrase used to express prior knowledge or understanding. According to Ludwig, it's most frequently found in News & Media contexts and serves to affirm agreement or knowledge. To ensure clear communication, avoid overuse to prevent sounding arrogant, and consider more formal alternatives like "assuredly I understand" in professional settings.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

of course, it's not news to me

Emphasizes that the information is already known by the speaker.

naturally I'm aware

Replaces "of course" with "naturally" and "know" with "aware", emphasizing the obviousness of the knowledge.

undoubtedly I realize

Replaces "of course" with "undoubtedly" and "know" with "realize", highlighting the lack of doubt in the knowledge.

certainly I'm conscious

Replaces "of course" with "certainly" and "know" with "conscious", adding a formal tone.

assuredly I understand

Uses "assuredly" for emphasis and "understand" as a more formal synonym for "know".

indeed I'm informed

Replaces "of course" with "indeed" and "know" with "informed", suggesting that the knowledge was acquired.

without a doubt I'm apprised

Replaces "of course" with "without a doubt" and "know" with "apprised", making the sentence more formal.

as a matter of fact I'm familiar

Adds "as a matter of fact" for emphasis and uses "familiar" to suggest a level of acquaintance.

to be sure I'm cognizant

Replaces "of course" with "to be sure" and "know" with "cognizant", elevating the formality.

I am definitely in the loop

Uses an idiomatic expression to convey that the speaker is well-informed.

FAQs

How can I use "of course I know" in a sentence?

You can use "of course I know" to express that you are already aware of something. For example, "Do you know how to solve this problem?" "Of course I know, I've done it before."

What are some alternatives to "of course I know"?

Some alternatives include phrases like "naturally I'm aware", "certainly I'm conscious", or "undoubtedly I realize", depending on the level of formality you want to convey.

Is "of course I know" appropriate for formal communication?

While "of course I know" is generally acceptable, it might be perceived as slightly informal. In very formal settings, consider using alternatives like "assuredly I understand" or "without a doubt I'm apprised" to maintain a more professional tone.

How can I avoid sounding arrogant when using "of course I know"?

To avoid sounding arrogant, ensure that your tone is polite and respectful. You can also soften the phrase by adding a reason or explanation to show that you're not just trying to assert your knowledge, such as "Of course I know, I studied this topic in detail last year."