| unbeliever(noun, person, belief, radical, revolutionary) |
| atheist(noun, unbeliever) |
| disbeliever(noun, detractor, cynic, doubter, pessimist) |
| infidel(noun, unbeliever) |
| agnostic(noun, adjective, barbarian, cynic, doubter) |
| doubter(noun, person, belief, detractor, cynic) |
| heathen(noun, adjective, not, unbeliever) |
| skeptic(noun, adjective, person, belief, detractor) |
| cynic(noun, radical, revolutionary, critic, detractor) |
| pagan(noun, adjective, barbarian, unbeliever) |
| dissenter(noun, radical, revolutionary, detractor, subversive) |
| freethinker(noun, doubter, unbeliever) |
| heretic(noun, radical, revolutionary, detractor, subversive) |
| materialist(noun, doubter) |
| pessimist(noun, unbeliever) |
| detractor(noun, radical, revolutionary, critic, subversive) |
| doubting Thomas(noun, person, belief, detractor, cynic) |
| gentile |
| iconoclast(noun, radical, revolutionary, detractor, subversive) |
| irreligionist |