This question is asking about the largest word in German.
Currently the question is worded as a survey, which is Off Topic on the StackExchange sites.
Nonetheless, it is potentially a useful and interesting question, so I'd like to propose a re-wording of the question, also with the consensus of the OP, which I think will accept.
I proposed it as a comment, but I'll paste it here:
I think that if we re-word the question so that it asks "What is the largest word in German that is commonly used?" then it'll work. So this narrows it a lot and it can have 3, 4 answers, at most.
About the General reference thing. If it's on the internet, it's not necessarily GF. The definition of this close-vote says explicitly "standard resources". So if it's not in the dictionary, or say Wikipedia, then it's no longer GF.
If it was on some site but the explanation was very "chaotic" and not a two-line thing, it'd still not be GF. This is just what I've learned from other SE sites, and it's theory so I don't know how it applies here. If you can find a standard resource where my proposal is answered, I have no problem letting it go.
Now, it may not be the perfect solution, but that's exactly why I'm proposing this meta question. So:
- if possible we find an alternative solution for the question;
- if it's not possible, we can close it because even with a wider "meeting", it turned out to be impossible.