Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. illex (inl-), ēgis, adj. [in-lex], without law, contrary to law, lawless (anteclass.); as a term of reproach: impure, inhoneste, injure, inlex, labes popli, Plaut. Pers. 3, 3, 4; Caecil. ap. Non. 10, 24 (Com. Fragm. v. 60 Rib.).
inlex, v. illex.