Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
2. Dīs, ītis (nom. Dītis, Petr. Poët. 120, 76; Quint. 1, 6, 34; cf. Serv. Verg. A. 6, 273; the nom. Dis very rare in the poets; Aus. Idyl. 12: de deis, 3), m. [cf.: dīus, divus, deus], orig. denoting godhead, deity, in general, and of Jupiter in partic.; cf.: Diespiter and Diovis = Juppiter; afterwards exclusively as the designation of the god of the infernal regions, the Greek Pluto, connected with pater, Varr. L. L. 5, § 66 Müll.; identified by Caesar with the Celtic god of night, cf. Caes. B. G. 6, 18, 1 sq.; Cic. N. D. 2, 26; Tac. H. 4, 84 fin.; Suet. Oth. 8; Inscr. Orell. 1465-1470 and 4967; without pater, Verg. G. 4, 519; id. A. 4, 702; 5, 731; 6, 127 al.: pallida Ditis aqua, Tib. 3, 1, 28: Ditis ignava aqua, id. 3, 3, 38; Ov. M. 4, 438; 511; id. F. 4, 449 al.: domina Ditis = Proserpina, Verg. A. 6, 397.