1. (n.) One who dictates; one who prescribes rules and maxims authoritatively for the direction of others.

2. (n.) One invested with absolute authority; especially, a magistrate created in times of exigence and distress, and invested with unlimited power.

Simon Legree absolute monarch absolute ruler all-powerful ruler arrogator autarch authoritarian authoritative autocrat caesar commissar czar despot disciplinarian doctrinaire driver duce hard master martinet oligarch oppressor overlord pharaoh slave driver stern stickler strong man tyrant usurper warlord