Webster’s Revised Unabridged Dictionary · 1913
Despot
Des′pot, n. [F. despote, LL. despotus, fr. Gr. δεσπότης master, lord, the second part of which is akin to πόσις husband, and L. potens. See Potent.] 1. A master; a lord; especially, an absolute or irresponsible ruler or sovereign.
Irresponsible power in human hands so naturally leads to it, that cruelty has become associated with despot and tyrant. C. J. Smith.
2. One who rules regardless of a constitution or laws; a tyrant.