nonbeliever
Definitions
A person who does not believe in a religion or a specific religious doctrine.
Someone who lacks faith or conviction in a particular idea, claim, or system of thought.
Examples
The nonbeliever questioned the validity of the ancient traditions practiced by the community.
Even as a staunch nonbeliever, he found the architecture of the cathedral to be breathtaking.
Synonyms
atheist agnostic skeptic infidel unbeliever freethinker secularist
Antonyms
believer theist devotee faithful worshiper religious person convert