au·to·crat /ˈɔtəˌkræt/
  獨裁者
  Au·to·crat n.
  1. An absolute sovereign; a monarch who holds and exercises the powers of government by claim of absolute right, not subject to restriction; as, Autocrat of all the Russias (a title of the Czar).
  2. One who rules with undisputed sway in any company or relation; a despot.
     The autocrat of the breakfast table.   --Holmes.
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  autocrat
       n : a cruel and oppressive dictator [syn: tyrant, despot]