Synonyms for Hippie:

adj.

far-out (adjective)
mod, unconventional.
unorthodox (adjective)
mod, unconventional, unusual, radical, psychedelic.

n.

drifter, dropout, demi-monde, exile, hunter-gatherer, bohemian, free spirit, beatnik. beatnik (noun)
dropout, radical.
hippie (noun)
hipster, flower child, hippy, free spirit, beatnik, bohemian.

Other synonyms:

hunter-gatherer, demi-monde, dropout, free spirit. drifter. exile. bohemian
beatnik.
nonconformist
bohemian.
Other relevant words:
exile, bohemian, free spirit, unusual, beatnik, unconventional, hunter-gatherer, demi-monde, dropout, psychedelic, radical.