An Etymological Dictionary of the German Language/Frost

by Friedrich Kluge

Frost, m., ‘frost, cold, chill,’ from the equiv. MidHG. vrost, OHG. frost, m.; comp. Du. vorst, AS. forst, E. frost, OIc. frost, n., ‘frost, cold’; a common Teut. abstract of frieren, Goth. *friusan. Goth. *frusta-, m., n., ‘frost,’ is wanting.