I am not sure I understand what uppity means. In the usual historical context, it was mean to describe blacks who refused to bow and scrape to whites in the South. What did it mean in the rest of the nation? I have no idea.

For me, it’s a poisoned word that you avoid, because for most people my age, it only has the first meaning, and any others have been lost.

Now, stuck-up, that I understand. That was pretty much endemic in junior high. Every girl described every girl she didn’t like as stuck-up.