Tyrannical

• (a.) Of or pertaining to a tyrant; suiting a tyrant; unjustly severe in government; absolute; imperious; despotic; cruel; arbitrary; as, a tyrannical prince; a tyrannical master; tyrannical government.
Found on http://thinkexist.com/dictionary/meaning/tyrannical/

tyrannical

tyrannical, tyrannic 1. Like a tyrant; that is, harsh, despotic, and arbitrary. 2. Etymology: formed in English from Latin tyrannicus, 'like a tyrant, despotic'; from Greek tyrannikos, 'of or pertaining to a tyrant'; from tyrannos, tyrant.
Found on http://www.wordinfo.info/words/index/info/view_unit/2207/
No exact match found