noun
yippie
Refers to a member of the Youth International Party (Yippies), a countercultural political group active in the late 1960s in the United States. The term is a historical proper noun and rarely used in modern Japanese outside of discussions of 1960s American counterculture.
イッピーは1960年代のアメリカの若者運動の一つだ。
The Yippies were one of the youth movements in 1960s America.