Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. săgārĭus, a, um, adj. [sagum], of or belonging to a mantle (sagum; post-class.): negotiatio, Dig. 14, 4, 5, § 15; 17, 2, 52: NEGOCIATOR SAGARIVS, a dealer in mantles, Inscr. Orell. 4251; also absol.: SAGARIVS, ib. 283, 3472, and 4723.