Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
rĕ-mancĭpo, āvi, ātum, 1, v. a., to transfer back again, remancipate: quem pater eā lege mancipio dedit, ut sibi remanciparetur, Gai. Inst. 1, 140; 1, 172; cf. Fest. s. v. remancipatam, p. 277 Müll.