pernĭcĭōsus, a, um, adj. [pernicies],
destructive , ruinous , baleful , pernicious (syn.: exitialis, capitalis): perniciosae leges, Caes. B. C. 1, 7: scripta auctori perniciosa suo, Ov. Tr. 5, 1, 68.— Comp. : morbi animi perniciosiores sunt, quam corporis, Cic. Tusc. 3, 3, 5; Sall. J. 46, 8.— Sup. : perniciosissimum fore, Nep. Ages. 6, 2; Inscr. Grut. 113, 2.—As subst.: pernĭcĭōsa , ōrum, n., baneful things : petuntur, Juv. 10, 54; cf.: inter perniciosissima numerare, Vell. 2, 7, 5.—Hence, adv.: pernĭcĭōsē , destructively , ruinously , perniciously : multa perniciose, multa pestifere sciscuntur in populis, Cic. Leg. 2, 5, 13: luxuriat vitis, Plin. 17, 22, 35, § 178.— Comp. , Cic. Leg. 3, 14, 32.— Sup. , Aug. Ep. 39.