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