c.1965, American English (Haight-Ashbury slang); earlier hippie, 1953, was a usually disparaging variant of hipster (1941) "person who is keenly aware of the new and stylish," from hip "up-to-date" (see hip (adj.)).
: Saigon has acquired an elaborate hippie culture
One of a group of usually young persons who reject the values of conventional society and withdraw into drifting, communes, etc, espouse peace and universal love, typically wear long hair and beards, and use marijuana or psychedelic drugs; beat, beatnik
[1960s+ Counterculture; fr hip]