नास्तिक — unbeliever (Noun)
unbeliever — नास्तिक
Unbeliever — One who does not believe; an incredulous person; a doubter; a skeptic.
Unbeliever — 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.