magisterial vs peremptory

magisterial and peremptory both are adjectives.

Word	Noun	Adjective	Verb	Adverb
magisterial	No	Yes	No	No
peremptory	No	Yes	No	No

As adjectives, magisterial and peremptory are synonyms defined as:

magisterial and peremptory: offensively self-assured or given to exercising usually unwarranted power

Other synonyms of magisterial include autocratic, bossy, dominating, high-and-mighty.

magisterial (adjective)	peremptory (adjective)
of or relating to a magistrate	putting an end to all debate or action
used of a person's appearance or behavior; befitting an eminent person	offensively self-assured or given to exercising usually unwarranted power
offensively self-assured or given to exercising usually unwarranted power	not allowing contradiction or refusal