UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈsʌtʃ/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/sʌtʃ/ ,USA pronunciation: respelling(such)

WordReference Collins English Usage © 2020
referring back
Such a thing or person means a thing or person like the one that has just been described, mentioned, or experienced.
We could not believe such a thing.
Be careful
Don't use ‘such’ when you are talking about something that is present, or about the place where you are. For example, if you are admiring someone's watch, don't say ‘I’d like such a watch'. Say ‘I’d like a watch like that'. Don't say about the town where you are living ‘There’s not much to do in such a town'. Say ‘There’s not much to do in a town like this'.
We have chairs like these at home.
It's hard living alone in a place like this.
‘such as’
You use such as between two noun phrases when you are giving an example of something.
They played games such as bingo.
Mammals such as dogs and elephants give birth to live young.
The first noun phrase is sometimes put between such and as. This use is more common in formal or literary English.
We talked about such subjects as the weather.
She spent a lot of time buying such things as clothes and linen.
‘such’ used for emphasis
Such is sometimes used to emphasize the adjective in a noun phrase. For example, instead of saying ‘He’s a nice man', you can say ‘He’s such a nice man'.
She seemed such a happy woman.
It was such hard work.
Be careful
Use a when the noun phrase is singular and countable. Don't say, for example, ‘She seemed such happy woman’. Also, don't say ‘She seemed a such happy woman’.
In conversation, for greater emphasis, some people say ever such instead of ‘such’.
I think that's ever such a nice photo.
Be careful
Don't use ‘ever such’ in writing.
You can use such to refer to something or someone that has just been described or mentioned and to emphasize a quality that they have. For example, instead of saying ‘It was a very old car. I was surprised to see her driving it’, you can say ‘I was surprised to see her driving such an old car’.
I was impressed to meet such a famous actress.
You really shouldn't tell such obvious lies.
‘such...that’: mentioning a result
You can also use such in front of a noun phrase when you are saying that something happens because someone or something has a quality to an unusually large extent. After the noun phrase, you use a that-clause.
This can be such a gradual process that you are not aware of it happening.
Sometimes the children are such hard work that she's relieved when the day is over.
'such' also found in these entries:

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