tyrannic

The tsars’ successors, the Soviets, proclaimed lofty ideals but in governing such a vast land they, too, became consumed by the tyrannic paranoia that plagued their forebears.

From Economist ● Aug. 18, 2016

The U.S. general in charge of the case admits Cargill's difficulties; but, somewhat like Captain Vere in Melville's Billy Budd, he sets law. however tyrannic, above lawbreaking, however understandable.

From Time Magazine Archive

Yet those commands, however arbitrary and unfeeling, were more supportable than those with which, after every other source of tyrannic authority had been drained, the day was ordinarily concluded.

From The Wanderer (Volume 3 of 5) or, Female Difficulties by Fanny Burney

I dare say these poor starving creatures would willingly have sought protection under the shadow of our mercy, rather than return to be the slaves of a tyrannic government.

From Memoirs of the Extraordinary Military Career of John Shipp Late a Lieut. in His Majesty's 87th Regiment by John Shipp

"There's nothing the matter," he said, in a tyrannic voice.

From Coquette by Frank Swinnerton