Ingosticism

Ignosticism is a lesser known alternative to atheism, agnosticism, theism, etc. From Wikipedia:

Ignosticism is the theological position that every other theological position (including agnosticism) assumes too much about the concept of God and many other theological concepts. It can be defined as encompassing two related views about the existence of God.

The first view is that a coherent definition of God must be presented before the question of the existence of God can be meaningfully discussed. Furthermore, if that definition cannot be falsified, the ignostic takes the position that the question of the existence of God is meaningless. In this case, the concept of God is not considered meaningless; the term "God" is considered meaningless.

The second view is synonymous with theological noncognitivism, and skips the step of first asking "What is meant by God?" before proclaiming the original question "Does God exist?" as meaningless.

An ignostic cannot even say whether he/she is a theist or a nontheist until a better definition of theism is put forth.