n. 25B6; noun RULER, monarch, crowned head, head of state, potentate, suzerain, overlord, dynast, leader. See list at ruler .
regal.
25B6; adjective
sovereign control : SUPREME, absolute, unlimited, unrestricted, boundless, ultimate, total, unconditional, full; principal, chief, dominant, predominant, ruling; royal, regal, monarchical.
a sovereign state : INDEPENDENT, autonomous, self-governing, self-determining; non-aligned, free.
(dated) a sovereign remedy for all ills : EFFECTIVE, effectual, efficient, powerful, potent; useful, helpful, valuable, worthwhile; excellent, reliable, unfailing; informal sure-fire; formal efficacious.