-Removed-Any god whose description is logically impossible. This could include a description that contradicts itself, or a description that contradicts things we consider to be known facts. I guess 'incoherent' is not quite the same thing as 'logically impossible', so you can add gods whose definition is incoherent to the list of gods that I am absolutely sure do not exist.
-Removed-What is your position on the invisible pink unicorn that lives in my fridge? Are you absolutely certain it doesn't exist?
What is your position on the existence of unicorns in general?
Are you absolutely certain you exist?
Are you absolutely certain I exist?
Are you absolutely certain someone you currently live with exists?
-Removed-I am certain enough that no theistic god exists that I would bet my life on it. Obviously other definitions of 'god' such as 'the universe' exist by definition.
Is that 'absolute' enough for you?
How can you be either of the above?
My experience and knowledge of the universe rules out the existence of a theistic god.
-Removed-No, I don't think this was very good indeed.
For one, every thing we know as "living entities" can die. Can God die?
"similar to but not limited by the popular understanding..."
So, anything that anyone can come up with. Pink unicorns for instance.
"spiritual"
Now this definitely needs to be defined. Which is probably going to be problematic, to say the least.
real
How do you define a "real" god.
constant
What? Don't know what that means in this context.
within our capacity of understanding.
I don't think what is referred to as 'God" is even remotely "within our capacity of understanding", certainly if said god exists "spiritually" in something known as "the spiritual world".
On the basis of this I'd say it can be ascertained with absolute certainty that god/s doesn't/don't exist.