Definition from Wiktionary, the free dictionary
- sa•dit•ty /sah-DIT-tee/
- (US, slang, chiefly African American) Acting snobbish, arrogant, or superior; uppity; perceived to be trying to associate with a higher social class.
- 2000: Mary Pattillo-McCoy, Black Picket Fences: Privilege and Peril Among the Black Middle Class
- She described herself as “naïve” and “sheltered,” and said that her friends affectionately called her “sadity,” an old black vernacular term for snobbish.
- 2004: Darrious D. Hilmon, Divalicious
- That doesn’t mean she has to speak so sadity.
- 2006: Teresa Seals, Taylor Made
- A perfect word for her: Sadity. Most people perceive her as arrogant, but when she opens her mouth, you can tell the girl is straight from the hood.
- 1969: Maya Angelou, I Know Why The Caged Bird Sings
- St. Louis teachers, on the other hand, tended to act very "siditty" and talked down to their students from the lofty heights of education and whitefolks' enunciation.
- 1967: Jet Magazine, July 20, 1967 
- Not only was Eartha, who is considered "seditty" by many Negroes, an eloquent Capital Hill spokesman for those young Dee Cee "rebels with a cause," but the volatile singer-actress is now laying elaborate plans to build a huge trade school for Negroes and other minorities somewhere between Las Vegas and Los Angeles that will "train them for real jobs that are attainable."