magisterial

of or relating to a magistrate; "official magisterial functions"

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"

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"