ūsurpātōrĭus — Lewis & Short
ūsurpātōrĭus, a, um, adj.usurpator,
I usurping, usurpatory:
temeritas,Cod. Just. 10, 47, 8.—Adv.: ūsurpātōrĭē, presumptuously, pretentiously, Ambros. Hexaëm. 3, 15, n. 64; id. in Psa. 118, Serm. 5, § 23 al.