1 not believing in any God or gods, or relating to such beliefs:
2 someone who believes that God does not exist
The group includes not only atheists and agnostics but also deists and those who maintained other religious affiliations.
The Greeks and Romans defined an atheist not as someone who disbelieved in God but as someone who rejected the traditional gods who protected the social order.
Parents who are atheists do not want prayer imposed on their children in school.
My husband is not religious, in fact, he's actively atheist.
My atheist brother said to me, "How can you believe in a God when children die of terrible diseases?"
Internet-based groups are seeking to spread the atheist message.