czar (n.)

• arrogator
• autocrat
• bey
• cacique
• caesar
• commissar
• despot
• dictator
• disciplinarian
• driver
• duce
• kaid
• khan
• martinet
• mikado
• negus
• oligarch
• oppressor
• pendragon
• pharaoh
• rig
• sachem
• sagamore
• shah
• sheikh
• shogun
• stickler
• tenno
• tycoon
• tyrant
• usurper
• warlord