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English definition of “tyrant”

tyrant

noun [C]     /ˈtaɪə.rənt/ US  /ˈtaɪ-/
a ruler who has unlimited power over other people , and uses it unfairly and cruelly : Tamir, one of several sons of the exiled ruler , vowed he would liberate his country from the tyrant.figurative humorous Overnight my boss seems to have turned into a tyrant.Powerful people and dictators
(Definition of tyrant noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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