Synonyms of unbelieving

Adjective

1. atheistic, atheistical, unbelieving, irreligious (vs. religious)

usage: rejecting any belief in gods

2. nescient, unbelieving, agnostic (vs. gnostic), agnostical

usage: holding that only material phenomena can be known and knowledge of spiritual matters or ultimate causes is impossible

3. disbelieving, skeptical, sceptical, unbelieving, incredulous (vs. credulous)

usage: denying or questioning the tenets of especially a religion; "a skeptical approach to the nature of miracles"

Definition and meaning of unbelieving (Dictionary)