An Etymological Dictionary of the German Language/rösche
Appearance
rösche, adj., ‘prompt, lively, alert, fresh,’ an UpG. word (Bav. and Swiss rœ̂š, ‘lively, precipitons, harsh’), from MidHG. rôsch, rœsche, OHG. rôsc, rôsci, ‘nimble, hasty, fresh’; cognate terms from which we may infer the prim. form (Goth. rausqa-?) are entirely wanting. The connection of the word with rasch is uncertain.