Definition of "hippie"

hippie

/ˈhɪpi/

noun
plural hippies
1. (1950s slang) A teenager who imitated the beatniks.
2. (1960s slang; still widely used in reference to that era) One who chooses not to conform to prevailing social norms: especially one who subscribes to values or actions such as acceptance or self-practice of recreational drug use, liberal or radical sexual mores, advocacy of communal living, strong pacifism or anti-war sentiment, etc.
3. (modern slang) A person who keeps an unkempt or sloppy appearance and has unusually long hair (for males), and is thus often stereotyped as a deadbeat.
4. Someone who dresses in a hippie style.
5. One who is hip.
adjective
comparative hippier, superlative hippiest
1. Of or pertaining to hippies.
  Quotations
  The drug-taking he's writing about is less hippie than punk: it's about speed and smack and pills as much as hallucinogens and weed, about compulsion as well as escape.
  2011, Mike Marqusee, Wicked Messenger: Bob Dylan and the 1960s
  You have to understand I worked in a very hippie nightclub for years, and the majority of the staff did not even like the Grateful Dead.
  2012, Christopher Lento, The Bartender Diaries...A Life Fantastic!, page 126
  And then I discovered LSD, you can't get much more hippie than that.
  2013, Ian Young, It's Not about Me!: Confessions of a Recovered Outlaw Addict
2. (colloquial, humorous) Not conforming to generally accepted standards.