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.

sempĭternum, adv., v. sempiternus fin. a.

sempĭternus, a, um, adj. [semper; like hesternus and aeternus, from heri and aevum], everlasting, ever-during, perpetual, continual, imperishable, eternal, sempiternal (cf. aeternus init.; very freq. and class.): fragile corpus animus sempiternus movet, etc., Cic. Rep. 6, 24, 26; cf. id. N. D. 3, 12, 29: immortalis memoria et sempiterna, Plaut. Mil. 3, 3, 15: deorum vita sempiterna, Ter. And. 5, 5, 3; cf.: aevo sempiterno frui, Cic. Rep. 6, 13, 13: ignes, id. ib. 6, 15, 15; cf.: cursus stellarum, id. ib. 6, 17, 17: gratias agere sempiternas, Plaut. Poen. 5, 4, 84: amicus, id. Most. 1, 3, 90; id. Pers. 1, 1, 36; cf.: verae amicitiae, Cic. Lael. 9, 32; so, hiemes, Varr. R. R. 1, 2, 4: ignis Vestae, Cic. Cat. 4, 9, 18: documentum Persarum sceleris, id. Rep. 3, 9, 15: memoria amicitiae nostrae, id. Lael. 4, 15: odia, id. ib. 10, 35: consilium senatus, id. Sest. 65, 137: potentia, Tac. A. 3, 30 et saep.: nihil umquam nisi sempiternum et divinum animo volutare, Cic. Rep. 1, 17, 28: nihil nisi sempiternum spectare, id. Rab. Perd. 10, 29: in sempiternum, forever, Vulg. Deut. 5, 29 et saep.
Adv., in three forms (not in Cic.), always, forever, perpetually.

      1. * a. sempĭ-ternum, Plaut. Aul. 2, 1, 26.
      2. b. sem-pĭternō, Cato ap. Charis. p. 194 P.: sempiterno permanet ea materia, Vitr. 1, 5; 9, 1, 2; Sol. 35, 5.
      3. c. sempĭternē, Pac. ap. Non. 170, 20; Claud. Mam. Stat. An. 1, 3.