atheist

/ˈeɪθiɪst/
/ˈeɪθiɪst/

noun

  1. A person who does not believe in deities.

  2. A person who does not believe in a particular deity (or any deity in a particular pantheon), notwithstanding that they may believe in another deity.

Synonyms: atheitard, gaytheist, nontheist
Antonyms: theist

adjective

  1. Of or relating to atheists or atheism; atheistic.