Definitions

1. adjective

having an attitude of superiority or haughtiness, especially in a way that is considered to be pretentious or arrogant

“She was accused of being uppity after correcting the waiter’s pronunciation of a dish’s name.”

2. noun

a person who behaves in an uppity manner, especially in a way that is considered to be pretentious or arrogant

“The company’s uppity executive was criticized for his condescending attitude towards the employees.”