From Middle High German haber, habere, from Old High German habaro, from Proto-Germanic *habrô. The modern consonantism is Low German (compare Middle Low German haver, havere and modern German Low German Haver, Hafer). The Upper German cognate form Haber is now obsolete in standard usage. The further history of the term is unclear; Jan de Vries considers it possible that it derives from a pre-PIE substratum. Cognate to Dutch haver, Swedish havre).
Hafer m (genitive Hafers, plural Hafer)
- “Hafer” in Duden online