know

[noʊ]

know Definition

• 1. to have information in your mind as a result of experience or study
• 2. to be certain that something is true or exists
• 3. to be familiar with someone or something

Using know: Examples

Take a moment to familiarize yourself with how "know" can be used in various situations through the following examples!

• Example

  I know how to play the guitar.

• Example

  I know that the Earth revolves around the Sun.

• Example

  Do you know John?

• Example

  I don't know what to do.

know Synonyms and Antonyms

Synonyms for know

• understand
• comprehend
• grasp
• realize
• perceive

Antonyms for know

• ignore
• misunderstand
• disbelieve

Idioms Using know

• you never know

  used to say that anything can happen and it is impossible to be sure about the future

  Example

  You never know, maybe you'll win the lottery someday.

• know the ropes

  to be familiar with the procedures and methods of doing something

  Example

  He knows the ropes of this job better than anyone else.

• know which side one's bread is buttered on

  to understand where one's interests lie and act accordingly

  Example

  He knows which side his bread is buttered on and always agrees with the boss.

Phrases with know

• know by heart

  to have memorized something completely

  Example

  She knows all the lyrics to that song by heart.

• know for a fact

  to be absolutely certain about something

  Example

  I know for a fact that he didn't steal the money.

• know one's way around

  to be familiar with a place or situation

  Example

  She knows her way around the city like a local.

Origins of know

from Old English 'cnāwan'

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Summary: know in Brief

The verb 'know' [noʊ] refers to having information in one's mind from experience or study, being certain of something, or being familiar with someone or something. It is often used in phrases like 'know by heart,' meaning to have memorized something completely, and idioms like 'you never know,' implying uncertainty about the future. 'Know' has formal synonyms like 'be acquainted with' and informal ones like 'figure out.'