schwebeablaut noun 1verb 1forms 3 noun1 •The phenomenon or process of metathesis in a Proto-Indo-European root between the vowel and a neighbouring sonorant, which led to both possible full-grades existing, e.g. *grebʰ- and *gerbʰ-. verb1 •To undergo the above process.But, in any event, Beekes' reconstruction seems less than ideal, given that it effectively relies on a schwebeablauting root[.] — 2013 formsschwebeablauted · schwebeablauting · schwebeablauts