existentialist
1. [ noun ] (philosophy) a philosopher who emphasizes freedom of choice and personal responsibility but who regards human existence in a hostile universe as unexplainable
Related terms: philosopher jean_paul_sartre beauvoir
2. [ adjective ] (philosophy) relating to or involving existentialism
Examples:

"existentialist movement" "existentialist philosophy" "the existentialist character of his ideas"

Related terms: existentialism
Similar spelling:   existential
  existentialism