lah-di-dah

la-di-da

1. adjective Pretentiously snobbish or elitist. I'd rather not go to some la-di-da restaurant and get overpriced rabbit food. Let's just get pizza.
2. interjection A sarcastic and derisive phrase meant to mock what one perceives as pretentious or overly refined. Well, la-di-da, look at Mr. Fancy in his new suit. Wow, you were on student council? La-di-da!
Farlex Dictionary of Idioms.

lah-di-dah

(ˈlɑˈdiˈdɑ)
1. mod. casual; relaxed and uncaring. She’s not all that calm about her possessions, but she is very lah-di-dah with men.
2. interj. a jeer; a mocking response. So you have a new car! Well, lah-di-dah.
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • dah
  • DI
  • la-di-da
  • lah
  • not anything to boast about
  • bulletproof
  • appropriate for
  • stuck-up
  • artsy
  • nothing to boast about
References in periodicals archive
After a short time of reviewing Bent and Bachelder's performances, he declared himself tired of "vulgarities of the 'Lah-di-dah' type"--the taste for which, he declared, was "coming from the gods" upstairs.
There's also some glamour on Friday with Bob taking beautiful bride Gennie to the lah-di-dah ceremony at Home Farm, secretly watched by Brenda.
With Pollard and Val getting together with the Sharmas, Priya's lah-di-dah mother Georgia wants the community to join in with the nuptials.
She said: "Sure honey, it's great to have the money and go to the premieres and all that lah-di-dah bull***t.
With busybody Norris permanently attached to a watering can, and having already clashed with Gail in pursuit of the first prize, his friend Scary Mary has some alarming news about the sudden horticultural efforts of lah-di-dah Sally Webster.
Then the only disturbances would be the Rovers' lah-di-dah landlady Annie Walker rattling her jewellery or battleaxe Ena Sharples plopping her dentures into a glass of water.
He laughs at his lah-di-dah accent which happened as a result of his time at public school.
But he will be a friend to all the lah-di-dah Newmarket trainers and his monied background, public-school breeding, and plummy voice are our passport to the world of privilege which dominates racing.
She spent years persuading lah-di-dah companies that her brand of holistics could unblock the energy channels of employees.
She is a stuck-up old bat with the lah-di-dah pretensions of that legendary grand dame of the Rovers Return, Annie Walker, mixed with a malicious streak that would make Anne Robinson shudder.
The hoity-toity Slater sister Belinda turns up for Zoe's party in the Vic and gets all lah-di-dah with her credit card.
44 The Speaker sacked his secretary for being a "typical Sloane Ranger with a lah-di-dah accent" whom he was convinced voted Tory.
We were mainly beaten by lah-di-dahs in white vests and plimsolls.
I don't like the lah-di-dahs who hunt them, but that's my class war problem.
Talk about gentlemen's game played by louts; more lah-di-dahs than louts if you ask me.