I.impious, heinous, execrable, abominable (mostly post-Aug.; “syn. infandus): sperate deos memores fandi atque nefandi,” i. e. wrong, impiety, Verg. A. 1, 543: nefandum adulterium, Cic. Fragm. ap. Quint. 5, 11, 12 (al. nefarium): “nefandum vehiculum,” Liv. 1, 59: “nefandissima quaeque tyrannicae crudelitatis exercuit,” Just. 16, 4, 11: “fraus,” Juv. 13, 174: “sacri,” id. 15, 116.—Of persons: “homo nefandus,” Plin. 28, 1, 2, § 9: “nefandi homines,” Quint. 1, 3, 17.—Sup.: “aususne es, nefandissimum caput? etc.,” Just. 18, 7, 10.—Hence, adv.: nĕfandē , impiously: multa nefande ausi, Sall. Fragm. ap. Prisc. p. 993 P. (dub: Dietsch. H. 1, 62, nefanda).—Sup.: “nefandissime,” Cassiod. Hist. Eccl. 10, 28.
nĕfandus , a, um, adj. ne-fari, lit. not to be mentioned, unmentionable; hence,