Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
saetĭ-ger (sēt-), gĕra, gĕrum, adj. [seta-gero], bristle-bearing, having coarse hair or bristles, bristly, setaceous (poet.): sus, Lucr. 5, 969; 6, 974; Verg. A. 12, 170; Ov. M. 10, 549: pecus, id. ib. 14, 289: vestis, of goats’ hair, Paul. Nol. Ep. 49, 12.
As subst.: saetĭger, gĕri, m. (sc. ferus), the bristle-bearer, bristler, as a poet. designation of the boar, Ov. M. 8, 376; Mart 13, 93, 1.
sētĭger, v. saetiger.