Affectedly genteel; pretentious.
Used to express disdain for something viewed as pretentious.
Affected in speech, manners, etc.; pretentiously refined.
A la-di-da person.
Affected speech or behavior.
Used to express derision in response to affectation, foppishness, etc.
Origin of la-di-da
- Imitative of affected speech
From American Heritage Dictionary of the English Language, 5th Edition