La-di-da (also written lah-di-dah or la-de-da) is a mocking way to describe someone who talks and acts as if they are finer, richer, or more cultured than everyone else. You say it when the posh voice feels put on: the long vowels, the little airs, the “look at me”.

La-di-da (also written lah-di-dah or la-de-da)La-di-da（也可以寫成lah-di-dah或la-de-da） is a mocking way to describe someone是一種嘲諷的說法，用來形容一個人 who talks and acts as if they are finer, richer, or more cultured than everyone else講話做事好像比別人高級、有錢或有文化。You你 say it when the posh voice feels put on會在那種裝出來的高級腔調出現時這樣說：the long vowels拉長的母音、the little airs小小的架子、the 'look at me'那種「看我」的感覺

It is informal, a bit old-fashioned, and usually unkind in a light way — closer to teasing than to a serious insult, though it can still land. British English uses it a lot; American English knows it too.

It它 is informal是口語的、a bit old-fashioned有點過時、and usually unkind in a light way而且通常帶點輕微的不友善──closer to teasing than to a serious insult比較接近調侃而不是認真的侮辱，though it can still land不過還是可能傷到人。British English英式英文 uses it a lot很常用；American English美式英文 knows it too也知道這個詞

It does not have a tight dictionary meaning beyond that tone: it is the sound of fake poshness, copied so you can laugh at it. Though actually, people sometimes use it playfully about themselves, putting on a silly voice on purpose.

It它 does not have a tight dictionary meaning beyond that tone除了那種語氣之外沒有很嚴格的字典意思：it is the sound of fake poshness它就是假裝高級的聲音，copied so you can laugh at it被模仿出來讓人笑。Though actually不過事實上，people sometimes use it playfully about themselves人有時候也會拿它開自己玩笑，putting on a silly voice on purpose故意裝出一個好笑的聲音

It is never a compliment when you aim it at someone else.

It它 is never a compliment when you aim it at someone else用在別人身上時絕對不是稱讚