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Definition of “know” - English Dictionary

"know" in American English

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knowverb

 us   /noʊ/ (past tense knew  /nu/ , past participle known  /noʊn/ )
  • know verb (HAVE INFORMATION)

[I/T] to have information in your mind; to be aware of something: [I] “Where did he go?” “I don’t know.” [T] Do you know the answer? [T] She knows the name of every kid in school. [+ question word] Do you know how to tap dance? [+ question word] We don’t know when he’s arriving. [+ (that) clause] I knew (that) something was wrong from the start. [+ question word] I want to know how much this will cost.
know of
If you know of someone or something, you have experience of or information about the person or thing: Do you know of a good doctor?
  • know verb (HAVE UNDERSTANDING)

[I/T] to agree with or understand the reasons for an action or opinion: [+ question word] I don’t know what all the fuss is about. [+ question word] “What a stupid movie!” “I know what you mean.”
know what it is (like) to
To know what it is (like) to be or do something is to understand because you have personally experienced it: She knows what it’s like to go bankrupt – it happened to her 20 years ago.
  • know verb (BE FAMILIAR WITH)

[I/T] to be familiar with a person or place: [T] I’ve known Vince since we were in elementary school. [T] She grew up in Hawaii so she knows it well. [T] Knowing Debbie (= from my experience of her in the past), she’ll do a good job.
  • know verb (FEEL CERTAIN)

[T] to feel certain about something: I know I’d enjoy myself if I went. [+ (that) clause] I know (that) I took those library books back. [+ wh- word] I don’t know whether or not I should go to college.
[T] to feel certain about something: I know I’d enjoy myself if I went. [+ (that) clause] I know (that) I took those library books back. [+ question word] I don’t know whether or not I should go to college.
  • know verb (RECOGNIZE)

[T] to recognize someone or something, or to recognize the difference between two people or things: That’s Pete – I’d know him anywhere. I know a bargain when I see one!

knownoun

 us   /noʊ/
  • know noun (HAVE INFORMATION)

in the know
Someone who is in the know has information about something: Ask Keith – he’s always in the know about upcoming projects.
(Definition of know from the Cambridge Academic Content Dictionary © Cambridge University Press)







"know" in British English

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knowverb

uk   /nəʊ/  us   /noʊ/ (knew, known)
  • know verb (HAVE INFORMATION)

A1 [I or T, not continuous] to have information in your mind: "Where did he go?" "I don't know." "What does it cost?" "Ask Kate. She'll know." She knows the name of every kid in the school. I don't know anything about this. [+ question word] We don't know when he's arriving. I don't know (= understand) what all the fuss is about. [+ (that)] I just knew (that) it was going to be a disaster. She knew (= was aware) (that) something was wrong. [+ obj + to infinitive ] Even small amounts of these substances are known to cause skin problems.formal The authorities know him to be (= know that he is) a cocaine dealer.
A1 [T not continuous] used to ask someone to tell you a piece of information: Do you know the time? [+ question word] Do you know where the Post Office is?
A2 [I or T, not continuous] to be certain: [+ (that)] I know (that) she'll be really pleased to hear the news. [+ question word] I don't know whether I should tell her or not. The party is at Sarah's house as/so far as I know (= I think but I am not certain).

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  • know verb (BE FAMILIAR WITH)

B1 [T not continuous] to be familiar with or have experience and understanding of: I've known Daniel since we were at school together. She grew up in Paris so she knows it well. I've seen the film "Casablanca" so many times that I know a lot of it by heart (= I know it in my memory). Knowing Karen (= from my experience of her in the past), she'll have done a good job.formal I have known (= experienced) great happiness in my life.
B1 [I or T, not continuous] (also know about) If you know a subject, you are familiar with it and understand it: Do you know about computers? She knows her subject inside out (= very well).
A2 [T not continuous] If you know a language, you can speak and understand it: Do you know any French?
[T not continuous] to recognize someone or something: That's Peter alright - I'd know him anywhere! I know a bargain when I see one.
know how to do sth
A2 to be able to do something because you have the necessary knowledge: Do you know how to print on this computer?
get to know sb/sth
B1 to spend time with someone or something so that you gradually learn more about him, her, or it: The first couple of meetings are for the doctor and patient to get to know each other. I'll need a few weeks to get to know the system.
know sb by name
to have heard the name of a person but not seen or talked to them
know sb by sight
If you know someone by sight, that person looks familiar to you, but is not a friend of yours.

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knownoun

uk   /nəʊ/  us   /noʊ/ informal
(Definition of know from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of know?
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