Definition of Existentialist

Noun: existentialist  eg-zis'ten-shu-list

  1. A philosopher who emphasizes freedom of choice and personal responsibility but who regards human existence in a hostile universe as unexplainable
    - existentialist philosopher, existential philosopher
Adjective: existentialist  eg-zis'ten-shu-list
  1. Relating to or involving existentialism
    "existentialist movement"; "existentialist philosophy"; "the existentialist character of his ideas"

See also:
existentialisms
existentialists