vizier n.

also vizir, 1560s, from Turkish vezir "counsellor," from Arabic wazir "viceroy," literally "one who bears (the burden of office)," literally "porter, carrier," from wazara "he carried." But Klein says Arabic wazir is from Avestan viçira "arbitrator, judge." He also says it replaced Arabic katib, literally "writer," in the sense "secretary of state."