Best definition
A combination of yuppie and uppity. An adjective describing a person in the upper-middle to upper socioeconomic class (usually

a yuppie), who acts as if they are above everyone else. Symptoms include snootiness, haughtiness, and generally distasteful treatment of the people around them.

That yuppity bitch thinks she can cut in line just because she’s carrying a Coach handbag and wearing a Dior suit.
yuppity: define #2
The act of saying yes but in a more jolly way than just a plain yes. Yuppity is saying you truly promise and cannot be a lie. Saying yuppity is always promising something happy and never sad.
yuppity: define #3
The drying of a woman’s vagina after one orgasm, making it difficult for her male partner to properly climax.
I was doing her doggie style and she came real hard, but then her pussy got all yuppity so I had her just blow me to get my rocks off.
yuppity: define #4
Acting in a douchey, uppity, upper middle class, stay at home, Dad bod, Small dick, named Steve kind of way.
Steve embarrassed me at urban outfitters because he was acting yuppity and using modern lingo.
yuppity: define #5
A adjective describing the poutrage displayed by a yuppie when her demands are not fulfilled to her exact specifications.
I was held up at Sbux because girl ahead of me got all yuppity. She ordered a sugar-free cappuccino with a double vanilla shot and low-foam and then got all mad when the soymilk wasn’t organic.