knowverb
hiểu biết, nhận biết
/nəʊ/understand the difference Related words and phrases
Idioms
as far as I know | as far as I can remember, see, tell, etc.used to say that you think you know, remember, understand, etc. something but you cannot be completely sure, especially because you do not know all the facts
As far as we knew, there was no cause for concern.As far as I can see, you've done nothing wrong.She lived in Chicago, as far as I can remember. before you know where you arevery quickly or suddenly
We were whisked off in a taxi before we knew where we were. be not to knowto have no way of realizing or being aware that you have done something wrong
‘I'm sorry, I called when you were in bed.’ ‘Don't worry—you weren't to know.’ better the devil you know (than the devil you don’t)(saying)used to say that it is easier and wiser to stay in a bad situation that you know and can deal with rather than change to a new situation that may be much worse
for all you, I, they, etc. know(informal)used to emphasize that you do not know something and that it is not important to you
She could be dead for all I know. God/goodness/Heaven knowsused to emphasize that you do not know something
God knows what else they might find.‘Where are they?’ ‘Goodness knows.’used to emphasize the truth of what you are saying
She ought to pass the exam—goodness knows she's been working hard enough. have/know all the answers(informal, often disapproving)to be confident that you know something, especially when you actually do not
He thinks he knows all the answers. have/know something off patto know something perfectly so that you can repeat it at any time without having to think about it
He had all the answers off pat. have seen/known better days(humorous)to be in poor condition
Our car has seen better days! I don’t know how, why, etc…(informal)used to criticize somebody’s behaviour
I don't know how you can say things like that. if (the) truth be known/toldused to tell somebody the true facts about a situation, especially when these are not known by other people
If the truth be known, I was afraid to tell anyone. I knowused to agree with somebody or to show sympathy
‘What a ridiculous situation!’ ‘I know.’used to introduce a new idea or suggestion
I know, let's see what's on at the theatre. know something as well as I doused to criticize somebody by saying that they should realize or understand something
You know as well as I do that you're being unreasonable. know somebody/something backwards(especially British English, informal)to know somebody/something extremely well
She must know the play backwards by now. know bestto 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 something)to be sensible enough not to do something
He knows better than to judge by appearances. know somebody by sightto recognize somebody 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 wellto be very aware of a fact and unable to deny or ignore it
He knew full well what she thought of it. know somebody/something inside out | know somebody/something like the back of your hand(informal)to be very familiar with somebody/something
This is where I grew up. I know this area like the back of my hand. know your own mindto have very clear and definite ideas about what you want to do
know your stuff(informal)to know a lot about a particular subject or job
know/tell somebody a thing or two (about somebody/something)(informal)to know/tell somebody some useful, interesting or surprising information about somebody/something
She's been married five times, so she knows a thing or two about men! know/learn/find something to your costto know something because of something unpleasant that has happened to you
She is a tough competitor, as I know to my cost. know your way aroundto be familiar with a place, subject, etc.
know what you’re talking about(informal)to have knowledge about something from your own experience
I worked there for 20 years, 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 something, especially by getting somebody else to tell them
The President has let it be known that he does not intend to run for election again. let somebody knowto tell somebody about something
I don't know if I can come, but I'll let you know tomorrow.Let me know how I can help.Please let me know if there's anything I can do to help. Lord knows…used to emphasize what you are saying
Lord knows, I tried to teach her. Lord (only) knows (what, where, why, etc.)…(informal)used to say that you do not know the answer to something
‘Why did she say that?’ ‘Lord knows!’ make yourself known to somebodyto introduce yourself to somebody
I made myself known to the hotel manager. not know any betterto 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 your arse from your elbow(British English, offensive, slang)to be very stupid; to have absolutely no skill
not know beans about something(North American English, informal)to know nothing about a subject
I don’t know beans about making movies. not know the first thing about somebody/somethingto know nothing at all about somebody/something
I’m afraid I don’t know the first thing about cars. not know, etc. the first thing about something/somebodyto know nothing at all about something/somebody
We’ve lived next to him for years, but we still don’t know the first thing about him. not know somebody from Adam(informal)to not know at all who somebody is
not know what hit you(informal)to be so surprised by something that you do not know how to react
not know where to look(informal)to feel very embarrassed 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
not know you are born(British English, informal)to have an easy life without realizing how easy it is
You people without kids don't know you're born. not want to know (about something)(informal)to take no interest in something because you do not care about it or it is too much trouble
I've tried to ask her advice, but she doesn't want to know (= about my problems).‘How much was it?’ ‘You don't want to know’ (= it is better if you don't know). old enough to know betterold enough to behave in a more sensible way than you actually did
show somebody/know/learn the ropes(informal)to show somebody/know/learn how a particular job should be done
there’s no knowingused 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 somebody knows nothing about the subject you are talking about
What does he know about football, anyway? what do you know?(informal)used to express surprise
Well, what do you know? Look who's here! (know) what’s what(informal)(know) what things are useful, important, etc.
She certainly knows what's what. you knowused when you are thinking of what to say next
Well, you know, it's difficult to explain.used to show that 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.used to emphasize something that you are saying
I'm not stupid, you know. you know something/what?(informal)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(informal)used to refer to somebody/something without mentioning a name
you never know(informal)used to say that you can never be certain about what will happen in the future, especially when you are suggesting that something good might happen
