Bumptious (4-9)
'bumptious' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for uppity that I've seen before include "Self-important, arrogant" , "Impertinent" , "'Self-important, overweening (6)'" , "attitude" , "Difficult to control" .)
'bumptious' is the definition.
(I've seen this before)
This is the entire clue.
(Another definition for self-important that I've seen is " Pompous".)