Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Dymas, antis, m., = Δύμας, the father of Hecuba, Ov. M. 11, 761; Serv. Verg. A. 7, 320; Hyg. Fab. 91; 111.
Hence, Dy-mantis, ĭdis, adj., of Dymas: proles, i. e. Hecuba; and, as subst.: Dyman-tis, ĭdis, f., the daughter of Dymas, i. e. Hecuba, Ov. M. 13, 620.
Dȳme, ēs, f., = Δύμη,