 Linguistic support for this part of his theory has been reserved, as the expected etymology of *χwainō would not have been "kainuu" like Vahtola had thought.There is also no evidence that the word "kainuu" had ever been used in the meaning of "swampy land" in any Finnish dialects.Professor of Germanic Philology in Helsinki University Jorma Koivulehto has proposed that "kainuu" is originally the same as the Germanic word for a hole or mouth, "*gain-".