Green’s Dictionary of Slang

arrogant, haughty, snobbish, conceited.

1963		Pittsburgh Courier 28 Sept. 18: [Proquest] Schenley, stronghold of this city’s ‘saditty’ set, was invaded one recent Sunday afternoon by bearers of ‘way out’ paintings, [...] and be-sneakered exponents of ‘beatnik’ poetry.
1968		N. Heard Howard Street 34: Real siditty affair, you know, all them stuck-up Montclair bitches and everything.
1969		‘Iceberg Slim’ Mama Black Widow 84: Lemme tell you about the sick sadiddy niggers [...] who strive to be white.
1971		R.D. Pharr S.R.O. (1998) 109: ‘What you want, Mr Seditty? [...] You’s a seditty bastid’.
1972		Milner & Milner Black Players 149: It was a ‘sidity’ narrative, portraying himself as the ‘craziest, baddest nigga still alive’.
1972		O. Hawkins Ghetto Sketches 158: I went with you over to St. Lukes 1st African Pres-bye-terian, to listen to them Saddity niggers sing spirituals like they had sticks up they butts.
1977		J. Sayles Union Dues (1978) 184: You gettin all siddity on me, think you too good to be out peddlin your butt on the street.
1980		E. Folb Runnin’ Down Some Lines xviii: Them siditty niggers they be frontin’ off all d’ time. [Ibid.] 253: seditty See hinety.
1982		Grandmaster Flash ‘The Message’ 🎵 She went to the city and got so so seddity.
1982		W. Safire What’s The Good Word? 86: As ‘saddity’ the word is also an adjective.
1992		R.C. Cruz Straight Outta Compton 42: He called Bosco uncouth and walked away. It sounded kind of seddity. Snooty, that is.
2002		‘Touré’ Portable Promised Land (ms.) 151: We Words (My Favorite Things) [...] Sassy. Saddity. Upitty.
2008		J. Davison Sweet Release 206: Brenda: Oh, we was good ’nuf to’ your ass before you started going up to that college and getting all saddity. Tamika: l'm not being saddity. l'm just taking a class.
2011		G. Hayward Corruption Officer [ebk] cap. 18: If my chips were up, I could have been moved out of this heighborhood [...] Do I think this move is a high-sodity one? No. It just makes common sense.
2022		J. Hannaham Didn’t Nobody Give a Shit 183: [T]his one or that one who had beef with me sayin Ise actin seditty an needed puttin in my place.