ūsurpātor, ōris, m. [usurpo, II. B. 2.],
I one who uses or takes possession unlawfully , a usurper of a thing (late Lat.): indebitae potestatis, Amm. 26, 7, 12: tanti nominis, Symm. Or. ap. Val. 1, 22.—
II In gen., one who accomplishes : ardui operis, Jul. Sev. Syn. praef. 1.