I.destructive, fatal, deadly (rare but class.): “exitiabilem illi faciam diem,” Plaut. Ep. 4, 2, 36: bellum suis civibus, * Cic. Att. 10, 4, 3; so, “bellum,” Eutr. 9, 7: “tyrannus,” Liv. 29, 17, 19: “clades,” Suet. Aug. 23: “discordiae,” id. Claud. 25: “reipublicae,” Tac. H. 2, 69: “morbus,” id. A. 16, 5: “fames,” Vell. 2, 112, 3: “telum,” Ov. M. 6, 257: “animus in suos,” Tac. A. 6, 24: “superstitio,” id. ib. 15, 44.—Adv.: exĭtĭā-bĭlĭter , perniciously, fatally, August. Civ. D. 1, 17.
exĭtĭābĭlis , e, adj. exitium,