in-vălĭdus, a, um, adj., not strong, infirm, impotent, weak, feeble (not in Cic. or Caes.).
I Lit.: Camillus, jam ad munera corporis senectā invalidus, Liv. 6, 8: milites, id. 23, 16: paucos graves aetate aut invalidos inveniunt, id. 10, 34 fin. : ad ingrediendum, Gell. 20, 1, 11: corpus laborum impatiens invalidumque, Ov. Tr. 5, 2, 4: manus, Luc. 5, 275: quidquid tecum invalidum metuensque pericli est, Verg. A. 5, 716: pueri, Val. Fl. 5, 24; (with inermis), Tac. A. 1, 46: corpus, Ov. H. 21, 297: artus, id. ib. 21, 245.— Comp. : invalidiores Parthi, Just. 41, 6, 3.— Sup. : invalidissimum urso caput, Plin. 8, 36, 54, § 130.—
II Transf., weak , inefficient , inadequate , unsuitable : stationes pro castris, Liv. 41, 2: invalida moenia adversum irrumpentes, Tac. A. 12, 16: invalidae ad hoc monstrum sugillandum litterae, Val. Max. 5, 3, 4: defensionis praesidia, id. 8, 1, 3: venenum, Claud. Cons. Mall. Theod. 170: causa, Luc. 7, 67: argumentum, Dig. 48, 18, 1: ignes, low , Tac. A. 1, 65: fama, inadequate , depreciating , Amm. 16, 10, 17.—Adv.: invălĭdē , weakly , feebly , Arn. 7, 250.