Lewis & Short

irrĕvŏcābĭlis (inr-), e, adj. [2. inrevocabilis], that cannot be recalled, irrevocable.

  1. I. Lit.: vulgus, uncontrollable, Luc. 1, 509: praeterita aetas, Lucr. 1, 468: in casum irrevocabilem se dare, unalterably, Liv. 42, 62, 3: semel emissum volat irrevocabile verbum, Hor. Ep. 1. 18, 71: constantia, unchangeable, Plin. Ep. 3, 7, 2.
  2. II. Transf.: ancorae pondere irrevocabili jactae, which, on account of their great weight, cannot be drawn back, Plin. 32, 1, 1, § 2: hamus, id. 16, 35, 65, § 159: Domitiani natura praeceps in iram et, quo obscurior, eo irrevocabilior, the more implacable, Tac. Agr. 42: gladius, not to be sheathed, Vulg. Ezech. 21, 5: donatio, irreversible, Dig. 39, 5, 34.
    Adv.: irrĕvŏcābĭlĭter, irrevocably, unchangeably, incessantly, Sen. Q. N. 2, 35, 1: progredi, Aug. Ep. 120, 24; id. Civ. Dei, 22, 20, 1.