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UK//aɪ nəʊ//US//aɪ noʊ//

Meaning of I know

An expression indicating awareness or understanding of something.

In simple words: I'm aware or have knowledge about something.

I know in a sentence

  • I know the answer to this question.
  • You think I don't know, but I do!
  • She said, 'I know how to fix this.'

How to use I know

Used to express understanding or familiarity. Avoid in formal writing; better alternatives exist.

Grammar pattern

know + object

Memory hint

Think of knowing as having a light bulb in your brain that lights up.

Related words

Collocations with I know

  • I know that
  • I know you
  • I know him

Synonyms for I know

  • I'm aware
  • I understand
  • I'm familiar with
  • I realize
  • I comprehend

Opposites of I know

Common mistakes with I know

  • Confusing 'I know' with 'I knew', which refers to past knowledge.
  • Using 'I know' in inappropriate contexts, like formal speeches.
  • Omitting the subject, resulting in an incomplete thought.

I know appears in

I know in other languages

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Frequently asked questions about "I know"

What does "I know" mean?

I'm aware or have knowledge about something.

What is the definition of "I know"?

An expression indicating awareness or understanding of something.

How do you use "I know" in a sentence?

I know the answer to this question.

Can you give another example of "I know"?

You think I don't know, but I do!

What are synonyms for "I know"?

Common alternatives include I'm aware, I understand, I'm familiar with, I realize, I comprehend.

What is the opposite of "I know"?

Opposite meanings include ignore, overlook, forget.

What words go with "I know"?

It commonly pairs with I know that, I know you, I know him.

What are common mistakes when using "I know"?

Confusing 'I know' with 'I knew', which refers to past knowledge. Using 'I know' in inappropriate contexts, like formal speeches. Omitting the subject, resulting in an incomplete thought.

How do you pronounce "I know"?

US: //aɪ noʊ//, UK: //aɪ nəʊ//. Listen to the audio above to hear native pronunciation.

When should I use "I know"?

Used to express understanding or familiarity. Avoid in formal writing; better alternatives exist.