What is another word for "heathen"?

Roget's Thesaurus (1911) lists these synonyms for "heathen": agnostic, agnosticism, air, alien, and, antichristian, antichristianity, atheism, atheist, atheistic, bad, banshee, belief, bout, carnal, cloud-compeller, dechristianize, deism, deist, deistical, demiurge, deva, devoutless, disbelief, disbelieve, doubt, dryad, earthly, fairy, faith, faithless, familiar, fay, folklore, fort, freethinker, freethinking, genius, gentile, giaour.