atheistic
1. [ adjective ] (religion) rejecting any belief in gods
Synonyms: unbelieving atheistical
Related terms: irreligious
2. [ adjective ] related to or characterized by or given to atheism
Synonyms: atheistical atheist
Examples:

"atheist leanings"

Related terms: atheism atheism
Similar spelling:   atheistical
  atheist
  attest
  attestation
  at_the_start
  atactic
  attestant