"knock at on against st" in German to knock at/on/against st. an/auf/gegen etw. klopfen schlagen stoßen Detailed translations for "knock at on against st" to knock at/on/against st. to knock at/on/against st. an/auf/gegen etw. klopfen to knock at/on/against st.(also: on), to strike out, to lash, to strike {struck) schlagen to knock at/on/against st. stoßen{intransitive verb}