"knuckle down" in German to knuckle down sich an die Arbeit machen zupacken kräftig arbeiten Detailed translations for "knuckle down" to knuckle down 1. general to knuckle down(also: to set to work, to get to work) sich an die Arbeit machen 2. to it to knuckle down(also: to get down to it, to lend a hand) zupacken to knuckle down(also: to get down to it, to lend a hand) kräftig arbeiten{intransitive verb}