Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
hypŏmŏnē, ēs, f., = ὑπομονή, rhet. t. t., a holding back of the principal thought for a surprise (pure Lat. sustentatio, inopinatum), Rufin. Fig. Sent. 34; cf. Quint. 9, 2, 22.