This article is within the scope of WikiProject Ancient Germanic studies, a collaborative effort to improve the coverage of Ancient Germanic studies articles on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.
I am not completely sure about what language "götiska" is, but I think the author is referring to the language of the geats. (Maybe that would be Geatic or Geatish in English?)
OK, this would make some more sense, The link is in Swedish, and I think the explanation of "götiska" and "göticism" would require an article in itself, since the background history seems rather complicated. http://genealogi.casterud.com/uppsats.htm
this is a question of the history of philology and linguistics, it is hopelessly complicated, and at present we have no place to address this centrally. At the time in question, the relationship between the Germanic languages was simply not known, and the term "gothic" vaguely referred to anything that was old and germanic. dab(ᛏ) 09:49, 4 Mar 2005 (UTC)
In this case, I believe it is a mistake by the original writer. "Götisk" referred both to "Geatish", "Old Norse" and to "Gothic". See for instance Göticism.--Wiglaf 18:16, 4 Mar 2005 (UTC)