Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
nancĭo, īre, v. a., and nancĭor, īri, v. dep. a. [root nac-, v. nanciscor], to get, gain, obtain (post-class.): si nanciam populi desiderium, Gracch. ap. Prisc. p. 888 P.: in foedere Latino: PECVNIAM QVIS NANCITOR (i. e. nancitur) HABETO, Paul. ex Fest. p. 166 Müll.