n. One who usurps; especially, one who seizes illegally on sovereign power; as, the usurper of a throne, of power, or of the rights of a patron. [ 1913 Webster ]
A crown will not want pretenders to claim it, not usurpers, if their power serves them, to possess it. South. [ 1913 Webster ]
[董卓, Dǒng Zhuóㄉㄨㄥˇ ㄓㄨㄛˊ] Dong Zhuo (-192), top general of late Han, usurped power in 189, murdered empress dowager and child emperor, killed in 192 by Lü Bu 呂布|吕布, See Also: 呂布, 吕布#23685