What does "yippie" mean?

A member of the Youth International Party, a group of politically active hippies.

What is a synonym for "yippie"?

Common synonyms include: anarchist, anarcho-syndicalist, beatnik, bohemian, bolshevik, deviant.

/ˈjɪ.pi/ intj, noun

intj, noun ·Rare ·Advanced level

Noun

1
A member of the Youth International Party, a group of politically active hippies.
2
Alternative letter-case form of yippie (“member of the Youth International Party”). alt-of

Intj

From initials of "Youth International Party" + -ie (influenced by hippie).