Tyranny

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late Middle English: from Old French tyrannie, from late Latin tyrannia, from Latin turannus (see tyrant).

wiktionary

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From Middle English tirannye, from Old French tyrannie, from Medieval Latin tyrannia, tyrania, from Ancient Greek τυραννία(turannía, “tyranny”), from τύραννος(túrannos, “lord, master, sovereign, tyrant”).

etymonline

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tyranny (n.)

late 14c., "cruel or unjust use of power; the government of a tyrant," from Old French tyranie (13c.), from Late Latin tyrannia "tyranny," from Greek tyrannia "rule of a tyrant, absolute power," from tyrannos "master" (see tyrant).