(strictly) A person who believes that no deities exist (especially, one who has no other religious belief).

Of or relating to atheists or atheism; atheistic.

(transitive, very rare) To make someone an atheist.

of or relating to atheists or atheism

plural of atheist

Third-person singular simple present indicative form of atheist

Of or relating to atheism; atheistic.

in an atheistic manner

The state or quality of being atheistic.

simple past tense and past participle of atheist