Definition of uppity adjective from the Oxford Advanced Learner's Dictionary

 

uppity

 adjective
adjective
BrE BrE//ˈʌpəti//
 
; NAmE NAmE//ˈʌpəti//
 
(old-fashioned, informal)
 
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behaving as if you are more important than you really are, especially when this means that you refuse to obey orders Word Origin late 19th cent.: a fanciful formation from up.
See the Oxford Advanced American Dictionary entry: uppity