Green’s Dictionary of Slang

(US) arrogant, haughty.

1929		T. Gordon Born to Be (1975) 207: The next thing I knew I was talking to Lady Astor’s sister [...] You know Zora Hurston put Astorperious in the Harlem slang, and that means the most elegant people on earth.
1935		Z.N. Hurston Mules and Men (1995) 114: Aw, gran’pa, don’t be so astorperious! We all wants to hear Larkins’ tale.
1942		Z.N. Hurston ‘Story in Harlem Sl.’ in Novels and Stories (1995) 1005: You over-sports your hand your ownself. Too blamed astorperious.