1) Agnostic 2) Agnostical 3) Atheistic 4) Disbelieving 5) Hesitant 6) Incredulous 7) Irreligious 8) Nescient 9) Skeptical 10) Unfaithful 1) Atheistic 2) Atheistical 3) Irreligious 4) Not believing 5) Rejecting any belief in gods 6) Skeptical 
• (a.) Not believing; incredulous; doubting; distrusting; skeptical. • (a.) Believing the thing alleged no to be true; disbelieving; especially, believing that Bible is not a divine revelation, or that Christ was not a divine or a supernatural person.
not believing; skeptical. · not accepting any, or some particular, religious belief.