existentialism (n.)

1941, from German Existentialismus (1919), replacing Existentialforhold (1849), ultimately from Danish writer Søren Kierkegaard (1813-1855), who wrote (1846) of Existents-Forhold "condition of existence," existentielle Pathos, etc. (see existential), and whose name means in Danish, literally, "churchyard" (compare Middle English cognate kirrkegærd (c. 1200), dialectal church-garth).