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English definition of “so-and-so”

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so-and-so

noun uk   /ˈsəʊ.ənd.səʊ/ us    /ˈsoʊ.ənd.soʊ/ informal

so-and-so noun (PERSON NOT NAMED)

[U] used instead of a particular name to refer to someone or something, especially when the real name is not important or you have forgotten it: She always keeps me up to date with the latest gossip - you know, so-and-so from down the road is having a baby and so-and-so's just bought a car.

so-and-so noun (UNPLEASANT PERSON)

[C] a polite way of referring to an unpleasant person: Mr Baker was such a so-and-so - he didn't have a pleasant word to say about anyone!
(Definition of so-and-so from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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