nefastum
Could not find nefasta in Logeion dictionaries.
nefasta neuter accusative plural, neuter nominative plural, neuter vocative plural of nefastum
nefasta feminine ablative singular, feminine nominative singular, neuter nominative plural, feminine vocative singular, neuter vocative plural, neuter accusative plural of nefastus
nĕfāstum, (16) ī, n. de nefastus, pris substt , crime, impiété : Hor. O. 1, 35, 35 ; Plin. 4, 47.