Denying or questioning the tenets of especially a religion
English: disbelieving, skeptical, sceptical, unbelieving
unbelievingEnglish
unbelieving, atheistic, atheistical, disbelieving, nescient
Adjective
Holding that only material phenomena can be known and knowledge of spiritual matters or ultimate causes is impossible
English: nescient, unbelieving
Rejecting any belief in gods
English: atheistic, atheistical, unbelieving