tyrannous

Etymology

From Latin tyrannus (“tyrant”) + -ous.

adj

1. Tyrannical, despotic or oppressive.
   It is extraordinary that as the wicked arts of this regicide and tyrannous faction increase in number, variety, and atrocity, the desire of punishing them becomes more and more faint […] 1797, Edmund Burke, “Remarks on the Policy of the Allies with Respect to France”, in Three Memorials on French Affairs, London: F. & C. Rivington, page 193
   As life wears on and finds no rest, The individual in each breast Is tyrannous to sunder them. 1881, Dante Gabriel Rossetti, “Soothsay” in Ballads and Sonnets, London: Ellis & White, pp. 269-270, The affinities have strongest part In youth, and draw men heart to heart