or la-de-da, lah-di-dah
an affected or pretentious person. behavior or speech characterized by affected or exaggerated gentility.
What does La-Di-Da mean?
informal. : affectedly or pretentiously elegant or refined in manners or tastes … they soon became civilized.
What does well la-di-da mean?
Used to express disdain for something viewed as pretentious. ... Expression of disdain for pretension or haughtiness. "Well la-di-da, aren't you the impressive personage, with a feather in your hair yet."