Open English Wordnet
Adjectives
(s)autocratic, bossy, dominating, high-and-mighty, magisterial, peremptoryoffensively 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”
(s)authoritarian, autocratic, dictatorial, despotic, tyrannic, tyrannicalcharacteristic of an absolute ruler or absolute rule; having absolute sovereignty“an authoritarian regime”, “autocratic government”, “despotic rulers”, “a dictatorial rule that lasted for the duration of the war”, “a tyrannical government”