• Greek a without; theos, God


Denial of God’s existence; system opposed to deism or theism, maintaining the existence of God and of one God only; in its extremist form, the denial of the existence of a First Cause; in less extreme, the substitution of matter, external and self-subsistent, for a God spiritual and personal; often confused with agnosticism and pantheism. Moral atheism comprises those ethical systems which teach that the morality of human acts has no reference to a Divine law-giver, i.e., godlessness in conduct regardless of a system of morals or of religious faith.

MLA Citation

  • “atheism”. New Catholic Dictionary. CatholicSaints.Info. 13 December 2019. Web. 24 September 2021. <>