1. (n.) One who does not believe; an incredulous person; a doubter; a skeptic.

2. (n.) A disbeliever; especially, one who does not believe that the Bible is a divine revelation, and holds that Christ was neither a divine nor a supernatural person; an infidel; a freethinker.

Pyrrhonist Sabbath-breaker apostate atheist backslider blasphemer deserter disbeliever doubter doubting Thomas gentile giaour goy heathen infidel kaffir minimifidian non-Christian non-Jew non-Mohammedan non-Mormon non-Moslem non-Muhammadan non-Muslim nonbeliever nullifidian pagan recidivist recreant renegade sacrilegist secularist shegets shiksa zendician zendik zendikite zetetic