interjection, adjective, noun
- (used as an expression of derision directed at affected gentility or pretentious refinement.)
- affected; pretentious; foppish: a la-di-da manner.
- an affected or pretentious person.
- behavior or speech characterized by affected or exaggerated gentility.
- informal a variant spelling of la-di-da
- informal affecting exaggeratedly genteel manners or speech
- a la-di-da person
mocking of affected gentility, 1874, in derisive imitation of “swell” way of talking.