Lewis & Short

Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.

interfector, ōris, m. [interficio], a slayer, murderer.

  1. I. Lit.: alicujus, Cic. Mil. 27, 72; id. Phil. 1, 14, 35; Nep. Att. 8, 3; Tac. A. 1, 9; 12, 48; 14, 44; Liv. 24, 7, 7; 44, 40, 9.
  2. II. Trop., a destroyer: veritatis, Tert. Carn. Christ. 5.

interfectōrĭus, a, um, adj. [interfector], deadly, murderous (late Lat.), Aug. de Lib. Arb. 3, 25; Isid. Orig. 17, 7, 7.
Subst.: interfectōrĭum, i, n., a means of destruction, Ambros. de Elia et Jejun. 10, 37 fin.
Hence, adv.: interfectōrĭē, destructively, murderously, Aug. contr. Parm. 3, 2, 14.