Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
largĭfĭcus, a, um, adj. [largus-facio], bountiful, Lucr. 2, 627: grando mixta imbri largifico, Pac. ap. Cic. de Or. 3, 39, 157 (Trag. Fragm. v. 414 Rib.).