What the word names now
In current English a hippie is still, first of all, a figure from the 1960s counterculture: usually young, dressed against the grain of office and suburb, often drawn to communal living, and associated with a nonviolent ethic. The same noun stretches, more loosely, to anyone who looks the part — long hair, beads, faded denim — whether or not the politics match. Tone depends on the speaker. It can be historical, fond, or a mild put-down.
Hippy is a recognized spelling variant. As an adjective the word describes clothes, music, or a slack unworldly manner that still reads as of that decade.
Formed in American slang
The origin of the word hippie is a native English derivation, not a borrowing from French, Latin, or any older literary stock. Dictionaries that publish etymologies agree on the immediate pieces: the slang adjective hip plus the diminutive suffix -ie (also written -y). The Oxford English Dictionary treats the noun as formed inside English and places its earliest evidence in a 1948 Billboard notice about a Broadway jazz club. Other dated examples sit nearby in the early 1950s, including George Mandel's 1952 novel Flee the Angry Strangers, where the word sits in the same street world as junkie.
That first life was not the Summer of Love. It was a usually mocking sibling of hipster. Hipster itself is attested around 1940–1941, built from hip plus the agent suffix -ster: a person keenly aware of the new, especially in jazz. A hippie in that older sense was often the lesser article — someone trying a little too hard to be in fashion.
Merriam-Webster dates the familiar counterculture sense to 1965. That September, San Francisco journalist Michael Fallon used the word in the Examiner for the younger crowd moving from North Beach into Haight-Ashbury, in a piece still framed as a story about beatniks. Local papers kept the label in circulation. By early 1967 Herb Caen's Chronicle columns had helped make it national, then international.
The adjective underneath
Everything after that hangs on hip, and hip hangs on hep. Both adjectives, meaning aware or up to date, surface in American slang at the turn of the twentieth century, only a year or two apart: hip in print by about 1902–1904, hep by 1903. For decades they were interchangeable. Jazz musicians took them up. African American usage in the jive years of the late 1930s and 1940s is where lexicographers usually place the later senses of sophisticated and currently fashionable. By about 1960 hip had overtaken hep, and hep itself could sound like a giveaway that the speaker was behind.
Where hip and hep came from is unknown. Standard dictionaries mark the source as uncertain. A popular account, spread in the late 1960s by the Africanist David Dalby, traces them to Wolof hipi or xippi, to open one's eyes. The idea is tidy, but later lexicographers, notably Jesse Sheidlower, have argued that the paper trail does not support a West African borrowing: the English slang is not attested until the early 1900s, and the first printed uses are not concentrated in African American speech. Other guesses — a Cincinnati detective, a Chicago saloonkeeper, a flask in a hip pocket, an opium smoker reclining on the hip — remain folklore without dated evidence.
So the morphology of hippie is transparent, while the deeper root of hip is a blank. That is not a gap to paper over. It is the honest limit of the record.
Two lives of the same spelling
Through the 1950s the noun stayed close to hipster and could be aimed at beatnik imitators or at anyone overdoing cool. Early 1960s newspaper columns still wobble between those readings. By mid-decade the Haight-Ashbury sense had taken over: long hair, anti-establishment politics, communal living, hallucinogens. People inside the movement often preferred freak or head; hippie was at first more a media and outsider label. Only later did many of the same people use it of themselves, often with a wry aging attached.
The 1968 coinage yippie, for the Youth International Party, was built on the same sound after the fact, which shows how firmly the new sense had stuck. Today the word can still name a historical type, a fashion, or a stereotype of sloppy idealism. The old jazz-slang meaning — a person merely trying to be hip — is now rare.
Relatives, not ancient cousins
Because the 1960s sense traveled with the news, other languages simply took the English form: French hippie or hippy, German Hippie, Spanish hippie and the adapted jipi, Russian хиппи, Japanese ヒッピー, Dutch and Swedish hippie. Those are loans, not inherited cousins of an ancient Indo-European root. The genuine English relatives are hip, hep, hipster, and hepcat.
One dating is worth keeping in mind when the histories disagree. The OED's 1948 Billboard hippie is a jazz-scene diminutive of hipster. Merriam-Webster's 1965 date is the year the same spelling started to mean a flower child. Same letters, two births, and an adjective whose own parentage nobody has settled.