Nontheism's a term that covers a range of both religious and nonreligious attitudes characterized by the absence of — or the rejection of — theism or any belief in a personal god or gods. It's in use in the fields of Christian apologetics and general liberal theology. "Nontheism" shouldn't be confused with "irreligion". Non-theism has various types. "Strong atheism"'s the positive belief that a god doesn't exist. Someone who doesn't think about the existence of a deity may be termed… (More on Nontheism)