Ignosticism is the philosophical position that most descriptions and definitions of God are incoherent, incomplete, discrepant, or contradictory (if not all of the above) and so cannot be discussed meaningfully.
What this means is that asking questions about God, or ruminating on the nature of God, or talking about us in relation to God are all probably meaningless because we cannot know what God is like because we cannot adequately describe God. If we are all talking about dissimilar things it becomes increasingly difficult to pin-point an accurate discription for the term “God,” and so we need something additional to clue us in as to which, if any, of the descriptions are accurate or reliable.
It seems to me that this additional requisite would be a kind of evidence or support which validates any given description of God. But this we do not find, thus ignosticism says it is meaningless to talk about God in nuanced theological ways until we can have a reliable description of what it is we are talking about when we speak of “God.”
Acquiring such a description would then yeild a reliable definition for believers to point to when they invoke the term “God.” The ignostic challenges the underlying semantics behind the definition of “God” as being valid, saying we cannot know with any certainty whether any description is accurate (because we have no evidence to check the description against) and therefore holds that most (maybe even all) descriptions of God are invalid. This challenge can be summed up nicely by the ignostic question: What do you mean by “God”?
As I have developed some ideas behind Ignosticism more thoroughly, I feel their are six main parts to the Ignostic proposition. It breaks down something like this:
1. There are numerous competing descriptions of God.
2. These descriptions sometimes overlap, but are mostly divergent or else in direct conflict with one another, while others completely negate each other (let’s call this the problem of dissimilarity).
3. Due to the personal nature of each religion and individual's unique understanding of God, every description of God will always be relative to the person and their particular brand of faith (the problem of confirmation bias).
4. Descriptions of God being relative to the individual, biased by doctrinal prejudices, give rise to even greater nuances between otherwise similar definitions of God whereby the given definition comports with religious theological premises/templates but not any tangible or testable object which could give rise to a verifiable description of said object (the problem of subjectivity).
5. The Ignostic therefore takes the position that due to a problem of dissimilarity in descriptions of God, nearly all definitions which make up the concept of God are rendered incoherent by the fact that virtually all descriptions fail to describe what they are purportedly meant to give description to (the referential problem).
6. Therefor no agreed upon description of the term "God" can be assigned which has any meaning in the way a description of a term would need to in order for it to be meaningful (the justification problem).
I think those who pause to think about the consequences of Ignosticism will realize it poses a rather substantial problem for theists, deists, and polytheists.
Although Ignosticism doesn’t necessarily disprove the existence of any God or gods, it does show that the descriptions provided and the definitions of any particular god do not comport to any coherent understanding of the supposed object these terms are supposed to help define in the first place.
Again, ignosticism’s goal isn’t to disprove God, per say. It merely demonstrates that the descriptions and definitions we use cannot have any agreed upon meaning with respect to what the term “God” is supposed to describe, and this problem is compounded by the fact that all religions/individuals continue to construct their own understanding of God relative to their pre-existing religious and cultural experiences as well as personal disposition. As a consequence of every definition of God being relative to personal experience, it becomes overly difficult to access which, if any, experience is a real, genuine, experience and which are not. As such, more and more competing definitions of God arise from this practice of define God relative to subjective experience rather than seeking to identify any tangible thing like a god to describe via observation (either directly or indirectly).
An interesting consequence of ignosticism is that it demonstrates that valid descriptions matter and that those who believe in a God, or anything like a god, must come to agreement with what they are purporting to describe. That is, the description has to be more than a conceptualization of what the religious individual would like God to be, rather any description provided must describe what God is (should God actually exist).
This challenge must be met in order to bypass the problem of dissimilarity, and a referent (the thing itself, in this case God) must be established so that the definition of God is accurately illustrated by the accompanying description of said referent (the thing itself).
Subsequently, having an actual referent for the object in question, all definitions of God should, in principle, converge. That is, everyone could come to agreement about what God is, and their descriptions would align thus giving way to matching definitions—regarldess of what their personal experience of this God might be.
Without any agreement about what it is a religious believer means by the definition of “God,” however, all one has is a subjective conceptualization dervied from personal, subjective experience and it is impossible to understand what it is meant when one asks the question “Does God exist?” or makes the statement “I believe in God” since the term “God” could possibly mean anything.
The ignostic, in order to be truly satisfied, must know, “What do you mean by God?” Otherwise, the ignostic holds that all you have suggested by “God” is a thing of your own imagining and not the thing itself.
Of course, many religious adherents are prone to dismiss competing definitions offhand because they don't respect opposing points of view or have more dogmatic religious reasons for ignoring competing religious claims. But even so, the dismissal of competing claims doesn't do away with the problem of dissimilarity, because one still must justify their description and definition of God before they can claim they believe in said description and definition as an accurate representation of said God.
As such, the problem of ignosticism can be easily solved if theists, and believers, would simply engage with other competing definitions of God.
Failing to do so would equate to failing to justify one's own terms, and as such whatever definition the believer chooses to use to describe “God” would ever be only a empty term which carried no meaning in a discussion about God because, all things considered, we still don’t know what it is we are talking about when we talk about God.