Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Dercĕtis, is, and Dercĕto, ūs, f., Δερκίτις and Δερκετώ, a Syrian goddess, called also Atargatis, supposed to be the same with the Greek Aphrodite, Ov. M. 4, 45; Hyg. Fab. 223; Plin. 5, 23, 19, § 81.