know

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English Vietnamese dictionary

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Advanced English dictionary

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verb, noun
+ verb (knew ) (not used in the progressive tenses)
have information
1 ~ (of / about sth) to have information in your mind as a result of experience or because you have learned or been told it: [VN] Do you know his address? + The cause of the fire is not yet known. + All I know is that she used to work in a bank (= I have no other information about her). + [V (that)] I know (that) people's handwriting changes as they get older. + [VN that] It is widely known that CFCs can damage the ozone layer. + [V wh-] I knew where he was hiding. + I didn't know what he was talking about. + [V] 'You've got a flat tyre.' 'I know.' + 'What's the answer?' 'I don't know.' + 'There's no one in.' 'How do you know?' + You know about Amanda's baby, don't you? + (spoken) I don't know about you, but I'm ready for something to eat. + I know of at least two people who did the same thing. + (spoken) 'Is anyone else coming?' 'Not that I know of.' + (spoken) 'Isn't that his car?' 'I wouldn't know. / How should I know?' (= I don't know and I am not the person you should ask). + (spoken) 'What are you two whispering about?' 'You don't want to know (= because you would be shocked or wouldn't approve).' + [V to inf] Does he know to come here (= that he should come here) first? + [VN to inf] We know her to be honest. + Two women are known to have died. - DISCOVER
realize
2 to realize, understand or be aware of sth: [V (that)] As soon as I walked in the room I knew (that) something was wrong. + She knew she was dying. + [V wh-] I knew perfectly well what she meant. + I know exactly how you feel. + [VN] This case is hopeless and he knows it (= although he will not admit it). + [V] 'Martin was lying all the time.' 'I should have known.'
feel certain
3 to feel certain about sth: [V (that)] He knew (that) he could trust her. + I know it's here somewhere! + I know things will turn out all right. + I don't know that I can finish it by next week. + I just knew that it was something I wanted to do. + [VN] (spoken) 'You were right-someone's been spreading rumours about you.' 'I knew it!' + [V] (spoken) 'She's the worst player in the team.' 'Oh, I don't know (= I am not sure that I agree)-she played well yesterday.'
be familiar
4 [VN] to be familiar with a person, place, thing, etc: I've known David for 20 years. + Do you two know each other (= have you met before)? + She was a secretary when I first knew her. + She's very nice when you get to know her. + Knowing Ben, we could be waiting a long time (= it is typical of him to be late). + This man is known to the police (= as a criminal). + I don't know anyone in Oxford. + I know Paris well. + Do you know the play (= have you seen or read it before)? + The new rules could mean the end of football as we know it (= in the form that we are familiar with).
reputation
5 ~ sb/sth as sth
~ sb/sth for sth [usually passive] to think that sb/sth is a particular type of person or thing or has particular characteristics: [VN] It's known as the most dangerous part of the city. + She is best known for her work on the human brain. + [VN to inf] He's known to be an outstanding physicist.
give name
6 [VN] ~ sb/sth as sth [usually passive] to give sb/sth a particular name or title: The drug is commonly known as Ecstasy. + Peter Wilson, also known as 'the Tiger'.
recognize
7 [VN] to be able to recognize sb/sth: I couldn't see who was speaking, but I knew the voice. + She knows a bargain when she sees one.
distinguish
8 [VN] ~ sb/sth from sb/sth to be able to distinguish one person or thing from another: I hope we have taught our children to know right from wrong.
skill / language
9 to have learned a skill or language and be able to use it: [VN] Do you know any Japanese? + [V wh-] Do you know how to use spreadsheets?
experience
10 (only used in the perfect tenses) to have seen, heard or experienced sth: [VN inf, VN to inf] I've never known it (to) snow in July before. + [VN to inf] He has been known to spend all morning in the bathroom.
11 [VN] to have personal experience of sth: He has known both poverty and wealth. + She may be successful now, but she has known what it is like to be poor.
Idioms: before you know where you are very quickly or suddenly: We were whisked off in a taxi before we knew where we were.
be not to know to have no way of realizing or being aware that you have done sth wrong: 'I'm sorry, I called when you were in bed.' 'Don't worry-you weren't to know.'
for all you, I, they, etc. know (spoken) used to emphasize that you do not know sth and that it is not important to you: She could be dead for all I know.
God / goodness / Heaven knows (spoken)
1 used to emphasize that you do not know sth: God knows what else they might find. + 'Where are they?' 'Goodness knows.'
Help Note: Some people may find the use of God knows offensive.
2 used to emphasize the truth of what you are saying: She ought to pass the exam-goodness knows she's been working hard enough.
I don't know how, why, etc. ... (spoken) used to criticize sb's behaviour: I don't know how you can speak like that to your mother. + I don't know what you think you're doing.
I know (spoken)
1 used to agree with sb or to show sympathy: 'What a ridiculous situation!' 'I know.'
2 used to introduce a new idea or suggestion: I know, let's see what's on at the theatre.
know sth as well as I do used to criticize sb by saying that they should realize or understand sth: You know as well as I do that you're being unreasonable.
know sb/sth backwards (informal, especially BrE) to know sb/sth extremely well: She must know the play backwards by now.
know best to know what should be done, etc. better than other people: The doctor told you to stay in bed, and she knows best.
know better (than that / than to do sth) to be sensible enough not to do sth: You left the car unlocked? I thought you'd know better. + He knows better than to judge by appearances.
know sb by sight to recognize sb without knowing them well
know different / otherwise (informal) to have information or evidence that the opposite is true: He says he doesn't care about what the critics write, but I know different.
know full well to be very aware of a fact and unable to deny or ignore it: He knew full well what she thought of it.
know sb/sth inside out
know sb/sth like the back of your hand (informal) to be very familiar with sth: This is where I grew up. I know this area like the back of my hand.
know your own mind to have very firm ideas about what you want to do
know your stuff (informal) to know a lot about a particular subject or job
know your way around to be familiar with a place, subject, etc.
know what you're talking about (informal) to have knowledge about sth from your own experience: I've lived in China, so I know what I'm talking about.
know which side your bread is buttered (informal) to know where you can get an advantage for yourself
let it be known / make it known that ... (formal) to make sure that people are informed about sth, especially by getting sb else to tell them: The President has let it be known that he does not intend to run for election again.
let sb know to tell sb about sth: I don't know if I can come, but I'll let you know tomorrow. + Let me know how I can help.
make yourself known to sb to introduce yourself to sb: I made myself known to the hotel manager.
not know any better to behave badly, usually because you have not been taught the correct way to behave: Don't blame the children-they don't know any better.
not know you are born (BrE, informal, spoken) to have an easy life without realizing how easy it is: You people without kids don't know you're born.
not know your arse from your elbow (BrE, !!!, slang) to be very stupid or completely lacking in skill
not know the first thing about sb/sth to know nothing at all about sb/sth: I'm afraid I don't know the first thing about cars.
not know sb from Adam (informal) to not know at all who sb is
not know what hit you (informal) to be so surprised by sth that you do not know how to react
not know where to look (informal) to feel great embarrassment and not know how to react
not know whether you're coming or going (informal) to be so excited or confused that you cannot behave or think in a sensible way
there's no knowing used to say that it is impossible to say what might happen: There's no knowing how he'll react.
what does ...know? used to say that sb knows nothing about the subject you are talking about: What does he know about football, anyway?
what do you know (about that)? (informal) used to express surprise: Well, what do you know? Look who's here!
you know (spoken)
1 used when you are thinking of what to say next: Well, you know, it's difficult to explain.
2 used to show what you are referring to is known or understood by the person you are speaking to: Guess who I've just seen? Maggie! You know-Jim's wife. + You know that restaurant round the corner? It's closed down.
3 used to emphasize sth that you are saying: That road is very dangerous, you know. + I'm not stupid, you know.
you know something / what? (spoken) used to introduce an interesting or surprising opinion, piece of news, etc: You know something? I've never really enjoyed Christmas.
you know who / what (spoken) used to refer to sb/sth without mentioning a name
you never know (spoken) used to say that you can never be certain about what will happen in the future, especially when you are suggesting that sth good might happen
more at ANSWER n., COST n., DAY, DEVIL, FAR adv., LORD n., OLD, PAT adv., ROPE n., THING, TRUTH
+ noun
Idioms: in the know (informal) having more information about sth than most people: Somebody in the know told me he's going to resign.

Thesaurus dictionary

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v.

1 understand, comprehend, be familiar with, grasp, be acquainted with, be versed or skilled in:

Do you know anything about nuclear physics? I know Italian fairly well. She knows how to dance the tango

2 recognize, identify, recall, remember, recollect:

I know him from somewhere.

3 be sure or certain or positive:

I knew I was right! I just know I'm going to win the first prize.

4 distinguish, separate, discern, differentiate, recognize, identify:

Charles doesn't know right from wrong.

5 be aware or conscious or cognizant of, be informed or advised of, have knowledge of:

He knows that he cannot fire her because she knows too much.

Collocation dictionary

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¹ have information about sth

ADV.

for certain, full well, perfectly well, very well

I don't know for certain, but I think she lives in the next village. You know very well what I'm talking about!

| honestly not

I honestly don't know what they mean to do.

VERB + KNOW

let sb

Please let me know (= tell me)if there's anything I can do to help.

PREP.

about

He knows a lot about early music.

| of

I don't know of anyone who might be interested in the job.

PHRASES

be widely known

It is widely known that CFCs can damage the ozone layer.

| know a lot, nothing, very little, etc.

² realize

ADV.

exactly, precisely

I know exactly how you feel.

| instinctively

He knew instinctively where he would find her.

³ be familiar with sb/sth

ADV.

well

I don't know John very well.

| hardly

But I hardly know the woman!

VERB + KNOW

get to

She's very nice when you get to know her

PHRASES

be known to sb

This man is known to the police (= as a criminal).

| be widely known 5 be known as

have a particular name

ADV.

colloquially, commonly, popularly | affectionately, familiarly | collectively

parts of the body known collectively as the sensory system

| variously

The drug is variously known as crack or freebase.

| locally | formerly

Xinjiang was formerly known as eastern Turkestan.

PREP.

to

He was known as Bonzo to his friends.

Concise English dictionary

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knew|known|knows|knowingnəʊ
noun
+the fact of being aware of information that is known to few people
verb
+be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about
+know how to do or perform something
+be aware of the truth of something; have a belief or faith in something; regard as true beyond any doubt
+be familiar or acquainted with a person or an object
+have firsthand knowledge of states, situations, emotions, or sensations
+accept (someone) to be what is claimed or accept his power and authority
+have fixed in the mind
+have sexual intercourse with
+know the nature or character of
+be able to distinguish, recognize as being different
+perceive as familiar

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