hippy

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 wearing unusually long hair (for males), and because of it, often stereotyped as a deadbeat.
4. Someone who dresses in a hippie style.
5. One who is hip.

adjective

Having prominent or in any other way unusual hips.