"be incument on sb" in German to be incument on sb. jds. Aufgabe sein jdm. obliegen etw. zu tun Detailed translations for "be incument on sb" to be incument on sb. to be incument on sb.(also: to be up to sb., to fall to sb., to be the responsibility of sb. to do sth.) jds. Aufgabe sein to be incument on sb.(also: to be up to sb., to fall to sb., to be the responsibility of sb. to do sth.) jdm. obliegen etw. zu tun