Lewis & Short

sēmĭ-nūdus, a, um, adj., half-naked (not ante-Aug.).

  1. I. Lit.: consules, prope seminudi sub jugum missi, Liv. 9, 6; 24, 40; Suet. Vit. 17; Front. Princ. Hist. p. 318.
    As subst.: ille seminudus, Sen. Ep. 6, 2, 2.
    1. B. Transf., half-unarmed, almost defenceless: pedes vagus et prope seminudus, Liv. 31, 35, 6.
  2. II. Trop.: sententiae, Front. Ep. ad Anton. 1, 2.