Oversimplification of definitions:

• atheist: Believes in no god.

• agnostic: that the existence of God, of the divine or the supernatural is unknown or unknowable.

Is there a term for someone who just does not care, who has no opinion about the existence or inexistence of god?

They have simply not looked into it. They have not yet formed an opinion and because of this both terms atheist and agnostic don't seem to fit.

Question: What do I call someone who has not formulated an opinion about god? I'm looking for a word other than "atheist" or "agnostic".