Ramesh, I don’t think there is a shared term. In the past I have suggested “doomed”, however, like you (once upon a time) I don’t take my own (agnostic) lack of belief seriously enough to have considered this question. I suppose it is worth pointing out that atheism is, ultimately, a matter of faith: the non-existence of God, like the existence of God, cannot be proved rationally, however hard mankind may try.