Nefastus, Adiect Vnluckie: vnhappie.Nefasti dies.Ouid.Liu.Dayes on which it was vnlawfull to pleade in law, and for the indge to vtter these three words. Do, Dico, Addico. Nefastum habetur prolibare dijs. Plin. It is counted an vnluckie or naughtie thing in offering sacrisice to tast, &c.Nefastum & dirum.Cic.Naughtie and horrible.Frutices nefasti. Plin. Locis nefastis imposuere delubra.Stat.Spiritum nefastum ferro exige.Senec.Terra nefasta.Liu.An vnluckie or vnhappie land.
Lewis and Short: Latin dictionary
nĕfastus, a, um, adj. [nefas]. I.Lit. (opp. to fastus): dies nefasti, days on which judgment could not be pronounced or assemblies of the people be held: fastis diebus jura fari licebat, nefastis quaedam non licebat fari, Paul. ex Fest. p. 93 Müll.: nefasti dies notantur N littera, quod iis nefas est praetori, apud quem lege agitur, fari tria verba: do, dico, addico, Paul. ex Fest. p. 165 Müll.; v. 1. fastus: ille (Numa) nefastos dies fastosque fecit, quia aliquando nihil cum populo agi, utile futurum erat, Liv. 1, 19, 7; Varr. L. L. 6, 4, 30; Ov. F. 1, 47; Gai. Inst. 4, 29.—II.Transf.A. For nefas, contrary to the sacred rites or to religion; irreligious, impious: QVAE AVGVR INIVSTA, NEFASTA, DEFIXERIT, Fragm. XII. Tab. ap. Cic. Leg. 2, 8 fin.: prolibare dis nefastum habetur, etc., Plin. 14, 19, 23, 119.—2. In gen., wicked, profane, abandoned: homines ad hanc rem idonei; nam istorum nullus nefastust, Plaut. Poen. 3, 2, 7.—Esp., subst.: nĕfastum, i, n. (sc. crimen), a wicked deed, abomination, profanity (poet. and in post - Aug. prose): quid intactum nefasti Liquimus?
profane, criminal
, Hor. C. 1, 35, 35; Plin. 4, 11, 18, 47.—B.Unlucky, inauspicious = funestus, ater (not anteAug.): ille et nefasto te posuit die, etc., Hor. C. 2, 13, 1: cum diem natalem ejus (Agrippinae) inter nefastos referendum suasisset, Suet. Tib. 53; Tac. A. 14, 12 init.: ne qua terra sit nefasta victoriae suae, Liv. 6, 28, 8: Acheron, Stat. Th. 4, 456: loca, id. ib. 1, 273: religiosi dies dicuntur tristi omine infames ... quos multitudo imperitorum prave et perperam nefastos appellat, Gell. 4, 9, 5.—C.Hurtful, injurious: innocentiorem tamen esse marem (fruticem); eaque causa est ne inter nefastos frutex damnetur, Plin. 20, 11, 44, 114.