atheist

 
Pronunciation: /ˈeɪθɪɪst/

noun

  • a person who does not believe in the existence of God or gods: he is a committed atheist

Derivatives

atheistic

Pronunciation: /-ˈɪstɪk/
adjective

atheistical

Pronunciation: /-ˈɪstɪk(ə)l/
adjective