so-and-so

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ˈso-and-so noun  1  [uncountable]NAME OF A PERSON used to refer to a particular person or thing when you do not give a specific name 某某人；某某事 → such and such I’d find myself thinking, ‘I wonder what so-and-so is doing?’ 我会发觉自己在想:“不知道某某人正在干什么呢？”2  [countable]NAME OF A PERSON a very unpleasant or unreasonable person – used when you want to avoid using a swear word 讨厌[无理]的人〔用以代替某个咒骂语〕 Peter can be a real so-and-so at times. 彼得有时候讨厌得很。

Examples from the Corpus

so-and-so• They're always gossiping about so-and-so having an affair with so-and-so.• He'd say, "Lula, let's do so-and-so, " and expect me to do it.• The paper is full of stories about how so-and-so violated this or that law.• Johnson was a mean old so-and-so.

ˈso-and-so nounChineseSyllable  

or when particular a person thing to used Corpus refer to

so-and-so
ˈso-and-so noun
1. [uncountable] used to refer to a particular person or thing when you do not give a specific name ⇨ such and such:
    I’d find myself thinking, ‘I wonder what so-and-so is doing?’
2. [countable] a very unpleasant or unreasonable person – used when you want to avoid using a swear word:
    Peter can be a real so-and-so at times.

so-and-soBrE /ˈsəʊ ən səʊ/ 🔊NAmE /ˈsoʊ ən soʊ/ 🔊 noun (

plural

so-and-sos) (informal) [usually singular] used to refer to a person, thing, etc. when you do not know their name or when you are talking in a general way （指叫不上名字的人、物，或泛指）某某人（或事物）◆What would you say to Mrs So-and-so who has called to complain about a noisy neighbour? 要是哪位太太嫌邻居太吵闹，打电话投诉，你怎么跟她说？🔊🔊an annoying or unpleasant person. People sometimes say so-and-so to avoid using an offensive word. 恼人的家伙；讨厌鬼◆He's an ungrateful so-and-so. 他是个忘恩负义的家伙。🔊🔊