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.

dĕorsum (dissyll. per synaeresin, Lucr. 1, 362; 2, 205 al.; cf., on the contrary, trisyll., id. 2, 202.
Also deorsus, like prorsus, quorsus, rursus, adversus, Cic. N. D. 1, 25, 69; Ap. M. 8, p. 207, 18; id. ib. 9, p. 236, 40; id. de Deo Socr. p. 47, 35; id. Flor. no. 15), adv. [contr. from devorsum, turned down], downwards, κάτω, opp. to sursum (class.).

  1. I. To indicate motion: ego me deorsum duco de arbore, Plaut. Aul. 4, 8, 8: deorsum cuncta feruntur (opp. flammae expressae sursum), Lucr. 2, 202; 205; 6, 335; Cic. N. D. 1, 25, 69; id. Fin. 1, 6, 18; Cels. 5, 26, 31: reliqui (gestus) ante nos et dextra laevaque et sursum et deorsum aliquid ostendunt, Quint. 11, 3, 105: deorsum cadit, Plaut. Rud. 1, 2, 89; cf.: ut isto gladio deorsus ad meum Tlepolemum viam quaeram, i. e. in orcum, Ap. M. 8, p. 207, 18.
        1. b. Pleonast. with versus (versum): ubi deorsum versus ibit, Cato R. R. 156, 4; Varr. R. R. 2, 7, 5; Quadrig. ap. Gell. 9, 1, 1: ubi eo veneris, clivos deorsum vorsum est, right down before you, Ter. Ad. 4, 2, 35.
        2. c. With sursum, up and down, ἄνω κάτω: ne sursum deorsum cursites, Ter. Eun. 2, 2, 47; cf.: naturis sursum deorsum, ultro citro commeantibus, Cic. N. D. 2, 33, 84: si sanguis sursum deorsumve erupit, Cels. 2, 8: cum terra quatitur et sursum ac deorsum movetur, Sen. Q. N. 6, 21.
  2. II. To indicate position, locality, down, below: qui colunt deorsum, magis aestate laborant: qui sursum, magis hieme … nec non sursum quam deorsum tardius seruntur ac metuntur, Varr. R. R. 1, 6, 3; Plaut. Aul. 2, 7, 5; Ter. Ad. 4, 2, 34 sq.; Vulg. Deut. 4, 39 al.
    Cf. on this art. Hand, Turs. II. p. 280- 282.

dĕorsus, v. preced. init.