autocracy

autoc|ra|cy /ɔːt'ɒkrəsi/ (autocracies)
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Autocracy is government or control by one person who has complete power.
Many poor countries are abandoning autocracy.
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An autocracy is a country or organization that is ruled by one person who has complete power.
She ceded all power to her son-in-law who now runs the country as an autocracy.