ˈtirənəs adjective
Etymology: Middle English, from Latin tyrannus + Middle English -ous
: marked by tyranny and especially by unjust severity : oppressive
tyrannous disregard of human rights
a proper protest against all tyrannous demands … that insist upon everybody's using a word in a particular sense — R.G.F.Robinson
escaping the tyrannous heat of the sun by the custom of siesta
Synonyms: see absolute