I.unappeasable, implacable (rare but class.); constr. with alicui, in aliquem, and absol.: “seque mihi implacabilem inexpiabilemque praeberet,” Cic. Pis. 33, 81: “implacabilis esse alicui,” Liv. 8, 35, 12: “in aliquem implacabilis esse,” Cic. Fam. 3, 10, 8; Liv. 26, 29, 4: “grave et implacabile numen,” Ov. M. 4, 452: “Turnus,” Verg. A. 12, 3: “adjuro Stygii caput implacabile fontis,” id. ib. 12, 816: “caelum,” Sil. 17, 253: “iracundiae,” Cic. Q. Fr. 1, 1, 13, § 39: “veteri odio,” Liv. 25, 16, 12; Ael. Spart. Vit. Sev. 18. — Adv.: implācābĭlĭter , implacably, only comp.: “cui implacabilius irascebatur,” Tac. A. 1, 13; so id. H. 3, 53 fin.
implācābĭlis (inpl- ), e, adj. 2. inplacabilis,