a·the·ism/ˈāTHēˌizəm/
Noun:
The theory or belief that God does not exist.
Definition of ATHEISM
1 archaic : ungodliness, wickedness
2 a : a disbelief in the existence of deity
b : the doctrine that there is no deity
Origin of ATHEISM
Middle French athéisme, from athée atheist, from Greek atheos godless, from a- + theos god
po toj definiciji, ako neko odgovori sa "ne" na "I believe there is a god", taj je ateista.