0 An uppity person behaves in an unpleasant way because they think that they are more important than they really are:
He got/became very uppity when his fashion designs were criticized.
1 acting in a way that is too confident for someone in your social class or for your young age:
I was just an uppity kid.
I sometimes believe that the imperfections of our constitution are rather an advantage than otherwise, because they prevent us from becoming too uppity.
He took a very "uppity" hand by saying we had nothing to suggest.
At the moment some of the representatives are getting a little uppity.
They embarked on a similar process of dialogue, and they might need to be reminded about that if they get too uppity on the issue.
No one has a more gloriously uppity charm; no voice can simultaneously so rasp and thrill; no one ever made standoffishness more come-hitherable.