magisterial -- (of or relating to a magistrate; "official magisterial functions")
autocratic, bossy, dominating, high-and-mighty, magisterial, peremptory -- (offensively self-assured or given to exercising usually unwarranted power; "an autocratic person"; "autocratic behavior"; "a bossy way of ordering others around"; "a rather aggressive and dominating character"; "managed the employees in an aloof magisterial way"; "a swaggering peremptory manner")
distinguished, grand, imposing, magisterial -- (used of a person's appearance or behavior; befitting an eminent person; "his distinguished bearing"; "the monarch's imposing presence"; "she reigned in magisterial beauty")