I have know

USAGE SUMMARY

The part of the sentence 'I have know' is not correct and usable in written English.
The correct form of this sentence is 'I have known'. You can use this sentence when you want to talk about something you have been aware of or experienced for a long time. Example: I have known my best friend since we were both five years old.

⚠ May contain grammatical issues

Human-verified examples from authoritative sources

Exact Expressions

11 human-written examples

"I have know Shimon Peres for many years, and I also know Erdogan," the former Norwegian prime minister Kjell Magne Bondevik said.

The Guardian

I first relinquish all I have know.

Duke University

Stuart and I have know for some time that these players are capable on their day".

BBC

I have know Angela through the industry.

Huffington Post

The progressive Christians I have know are bold people.

Huffington Post

The couple was played by my good friend Danny Mennik who I have know for years.

Vice

Human-verified similar examples from authoritative sources

Similar Expressions

49 human-written examples

I have known a man.

The New Yorker

I have known Fred Wilpon forever.

The New York Times - Sports

Should I have known?

The Guardian - Opinion

I have known for a long time.

The New York Times

I have known Roberta a long time.

Independent

Expert writing Tips

Best practice

When expressing familiarity or awareness, consider using alternative phrases like "I am aware of" or "I understand" for clarity and grammatical correctness.

Common error

A common mistake is using the base form of the verb after "have" instead of the past participle. Remember that "have" requires the past participle form (e.g., "known", "seen", "done"), not the base form (e.g., "know", "see", "do").

Linguistic Context

The phrase "I have know" is grammatically incorrect; the correct form is "I have known". The auxiliary verb "have" requires the past participle form of the verb, which in this case is "known". According to Ludwig AI, this structure is not usable in written English.

Expression frequency: Missing

Frequent in

Science

0%

News & Media

0%

Formal & Business

0%

Less common in

Science

0%

News & Media

0%

Formal & Business

0%

Ludwig's WRAP-UP

The phrase "I have know" is a grammatical error and should be corrected to "I have known". As Ludwig AI points out, the auxiliary verb "have" requires the past participle form of the main verb. The intended meaning is to express familiarity, awareness, or past experience. Correct usage spans various contexts, whereas the error undermines effective communication. Alternatives such as "I am aware" or "I understand" can also be used depending on the specific context.

More alternative expressions

Phrases that express similar concepts, ordered by semantic similarity:

I have known

Corrects the grammatical error by using the past participle 'known' instead of 'know'.

I am familiar with

Indicates acquaintance with a topic or person.

I am aware

Replaces the phrase with a simpler expression of knowledge.

I have experience with

Highlights past involvement or expertise.

I understand

Expresses comprehension of a concept.

I've learned

Implies acquiring knowledge through study or experience.

I recognize

Suggests acknowledging or identifying something.

I've realized

Expresses coming to an understanding.

I have noticed

Indicates observation of something.

I have seen

Implies direct observation or experience.

FAQs

How do I correct the phrase "I have know"?

The correct form is "I have known". Use "known", the past participle of "know", after the auxiliary verb "have".

What's the difference between "I have know" and "I have known"?

"I have know" is grammatically incorrect. "I have known" is the correct form, indicating past experience or familiarity.

What can I say instead of "I have know"?

Since "I have know" is incorrect, consider using alternatives like "I am aware", "I am familiar with", or "I understand" depending on the context.

How to use "I have known" in a sentence?

"I have known" is used to express familiarity or past experience. For example, "I have known her for many years" or "I have known about this issue for a while".