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Justyna Jupowicz-Kozak

CEO of Professional Science Editing for Scientists @ prosciediting.com

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I knew about

Grammar usage guide and real-world examples

USAGE SUMMARY

The phrase "I knew about" is correct and usable in written English.
You can use it when referring to prior knowledge or awareness of a particular subject or situation. Example: "I knew about the changes in the schedule before the meeting started."

✓ Grammatically correct

News & Media

Science

Human-verified examples from authoritative sources

Exact Expressions

58 human-written examples

"That's not something I knew about," she says.

News & Media

The Guardian

I knew about manufacturing.

News & Media

The New York Times

I KNEW about fear.

News & Media

The New York Times

I knew about recording history.

News & Media

The New York Times

I knew about its existence.

News & Media

The New York Times

I knew about it.

News & Media

The Guardian

I knew about despair.

News & Media

The New York Times

"I knew about Jesus".

I knew about nature.

News & Media

The Guardian

This is before I knew about alginate.

News & Media

The New Yorker

"I knew about that," Johnson said.

News & Media

The New York Times
Show more...

Expert writing Tips

Best practice

When writing, consider the context and adjust your vocabulary choices so as to find the best word to reflect the kind and completeness of your knowledge. For example, instead of writing "I knew about the incident", if your knowledge was vague write "I had heard of the incident."

Common error

While acceptable, repeatedly using "I knew about" in formal documents can sound repetitive. Vary your sentence structure by using synonyms like "I was aware of" or "I had knowledge of" to maintain a professional tone.

Antonio Rotolo, PhD - Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Antonio Rotolo, PhD

Digital Humanist | Computational Linguist | CEO @Ludwig.guru

Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Linguistic Context

The phrase "I knew about" primarily functions as a declarative statement indicating the speaker's prior awareness or knowledge of a particular subject, event, or person. It asserts a state of being informed. As Ludwig confirms, this phrase is indeed correct and usable.

Expression frequency: Very common

Frequent in

News & Media

45%

Science

25%

Formal & Business

10%

Less common in

Encyclopedias

5%

Wiki

5%

Reference

10%

Ludwig's WRAP-UP

In summary, the phrase "I knew about" serves as a clear and direct way to express prior knowledge or awareness, suitable for various contexts. Ludwig confirms that the expression is grammatically correct and widely used. Although "I knew about" appears most frequently in news and media, it also appears in science, and business contexts. When it comes to writing, while perfectly acceptable, consider more formal alternatives for more sophisticated writing. Remember also that options like "I found out about" carry the opposite meaning, indicating the acquisition of new knowledge.

FAQs

What can I say instead of "I knew about"?

You can use alternatives like "I was aware of", "I had knowledge of", or "I was familiar with" depending on the context.

How do I use "I knew about" in a sentence?

Use "I knew about" to express prior knowledge or awareness of something. For example, "I knew about the meeting" or "I knew about the risks involved."

Which is correct, "I knew about it" or "I knew of it"?

"I knew about it" is generally more common and natural. "I knew of it" is grammatically correct, but implies a more distant or superficial awareness.

What's the difference between "I knew about" and "I found out about"?

"I knew about" indicates prior knowledge, while "I found out about" indicates the acquisition of new information. They describe opposite perspectives in the timeline of gaining information.

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Source & Trust

87%

Authority and reliability

4.5/5

Expert rating

Real-world application tested

Most frequent sentences: