Wann ihr nimmi bei Mercer Museum un Fonthill Castle gange gewest, gehnt mol!
In addition to the Urglaawe-specific words presented in A Dictionary of Urglaawe Terminology, there are, unfortunately, many words that we use in Deitsch that do not appear in the most accessible dictionaries.
Here on the Deitscherei blog now are lists of words that I have noticed over the years are missing from the dictionaries. The word lists are still not comprehensive, but they do present omitted, yet current, words relating to technology, herbalism, religion, social issues, and more.
This is going to be a long-term, ongoing effort.