Skip to main content
to know

to know

1.0
To have information about something
  • verb
  • /noʊ/
translation icon : saber
  • Well, how do you know if you are happy?
  • want to know
  • let me know
  • need to know

And that's when I knew that I had him.

Autoplay Next

Examples

  • Most candidates are quite anxious to know when they will hear back from a district.

    Academic text (2015)
  • She wanted to know what time the meeting would start.

  • And what else would we like to know, right?

  • You may think you know me, and you do.

  • How was I expected to know who you were?

  • Why not get involved and let us know what you would like to see changed?

    Academic text (2013)
  • You have to listen to the words carefully to know what they are arguing about.

    Academic text (2015)
  • Standards describe what students should know and be able to do in specific grades and subjects.

    Academic text (2015)
  • In the end, though, either you know how to play the piano or you don't.

    Academic text (2017)
  • Several borrowers expressed concern and felt stressed knowing they would eventually have to repay these loans.

    Academic text (2015)

Synonyms

to understand
vsto know
1.0

To know the meaning of something

is about possessing information or memory rather than deeper comprehension
to recognize
vsto know
  • US
705 1.4

To be fully aware that something is true or happening

emphasizes simple possession of information rather than coming to realization
to perceive
vsto know
369 3.0

To become aware of something in your mind and understand it

focuses on having or learned facts rather than the process of noticing
to recollect
vsto know
20 3.7

To remember something from the past

means having or learning information now rather than retrieving it from memory
to cognize
vsto know
1 9.6

To notice and understand something in your mind

is the general everyday sense of having information or learned facts

Antonyms

1.0

Not remember something you should remember

Idioms

you know what
  • Informal
797 7.5

To say something new or surprising to get someone's attention

220 1.0

Tell someone that they already know this

in the know
  • Informal
20 8.1

A person who knows secret or new information most people do not have

15 6.7

To understand a situation or subject well

11 4.9

Understand what really happens in a situation, often when it is bad

To be sure about what you want and act on it

To have secret information about hidden bad things in a group

1 7.8

To understand how things work in a place or job

1 8.2

To understand if something is clean and where it has been

1 9.7

Have almost no idea about something

1 6.4

To understand what is really happening because of experience

Act to protect your own interests

To have no idea who a person is at all

Not to know a person at all

Said when someone will not tell and the other person must find out

Be aware of other people's private lives

To not understand anything about a subject

To be an expert in a subject like cooking or computers

to know one's shit
  • Offensive
9.9

To have a lot of skill and information about a subject

To not recognize a person at all

To not recognize someone at all because you have never met them

Only people with the same knowledge or experience understand this

8.1

A reply saying the person who criticizes has the same fault

9.9

A person who says or writes something that sounds like a poem without knowing it

Say someone does not know about something, often as a joke

Phrasal Verbs

1.5

Have information about a person or situation

637 1.8

Tell me when something changes or you have news

366 3.5

You cannot be sure what will happen

To be aware of what is happening

279 3.6

To have no idea about something

155 1.0

To tell us something so we can answer

Can find things and use a place or topic easily

Remember something so well that you can say it without reading

to know apart
  • Archaic
3.2

To tell the difference between two similar people or things

Compounds

don't-know
  • Specialized
588 9.6

A person who answers 'I don't know' to a question in a poll or survey

136 4.1

Practical skill and experience for doing technical tasks

need-to-know
  • Formal
84 7.7

Information given only to people who must have it for their work

know-it-all
  • Offensive
28 5.7

A person who thinks they are always right and annoys others

12 5.5

A rule that gives information only to people who need it for their work

know-all
  • Offensive
9 7.7

A person who acts like they have all the answers and won't listen to others

know-nothing
  • Offensive
5 8.5

An insulting word for a person who has very little information

A strong wish to learn new things about the world

Know-Nothing Party
  • Offensive
9.9

A 1850s American political party that opposed immigrants and Catholics

How Certain

to know
1.0
to believe
1.0
to think
1.0

Surface Forms

know infinitive
knowing present participle
knows third person singular
knew past
known past participle

Etymology

Know comes from a very old root for 'have information in your mind', and the word knowledge shows this link. So when you 'know' where something is, you simply mean you have that information.