arch tyrant

A chief tyrant; one invested with more power to tyrannize than others, and who takes advantage of his opportunities to act despotically. "As every wicked man is a tyrant, according to the philosopher's position; and every tyrant is a devil among men so the devil is the arch-tyrant of the creatures; he makes all his subjects errand va als, yea, chained slaves."- Bp . Hall : Rem ., p. 25.