Definition of tyranny noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈtɪrəni//
    ; NAmE NAmE//ˈtɪrəni//
    [uncountable, countable](pl. tyrannies)
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  1. 1unfair or cruel use of power or authority a victim of oppression and tyranny The children had no protection against the tyranny of their father. the tyrannies of Nazi rule (figurative) These days it seems we must all submit to the tyranny of the motor car.
  2. 2the rule of a tyrant; a country under this rule synonym dictatorship Any political system refusing to allow dissent becomes a tyranny.
  3. Word Origin late Middle English: from Old French tyrannie, from late Latin tyrannia, from Latin turannus, from Greek turannos.
See the Oxford Advanced American Dictionary entry: tyranny