Lewis & Short

ĭn-ēluctābĭlis, e, adj., from which one cannot extricate one’s self, unavoidable, inevitable (poet. and post-Aug.).

  1. I. Lit.: caenum, Stat. Th. 9, 502.
  2. II. Trop.: tempus, Verg. A. 2, 324: fatum, id. ib. 8, 334; Vell. 2, 57 fin.