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/