- n1. unbeliever, infidel, pagan, Islam. kaffir, gentile; atheist, freethinker, disbeliever, nullifidian; agnostic, skeptic, Pyrrhonist, doubter, Doubting Thomas; iconoclast, secularist; apostate, heretic, backslider, antichrist.2. primitive, aboriginal, barbarian, philistine; savage, Caliban; idolator, sun worshipper, fire worshipper.adj3. heathenish, infidel, pagan, gentile, godless; atheistic, freethinking, disbelieving, nullifidian; agnostic, skeptical, cynical, doubting, Pyrrhonistic, iconoclastic; irreligious, worldly, secularist, irreverent, scoffing; heretical, not-born-again, unsaved, unchristian, impenitent, unrepentant, living in a state of sin, bound for hell.4. unenlightened, primitive, philistine, untamed, uncivilized; barbarous, idolatrous, savage, brutish; polytheistic, pantheistic, voodooistic.
A Note on the Style of the synonym finder. 2014.