the belief or doctrine that there is no deity
Atheism is the denial of the existence of God, although it is made problematic by the fact that some believers may claim that God does not exist in a literal way or in the same sense that other things exist. Atheism includes the claim that ‘God’ is meaningless, unhelpful or simply mistaken as a way of interpreting the world — Dr Mel Thompson
atheist noun
atheistic /-ʹistik/ adj
atheistical /-ʹistikl/ adj
atheistically /-ʹistikli/ adv
[early French athéisme from Greek atheos godless, from a-2 + theos god]