Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pēlĭcātus (pelli-, paeli-), ūs, m. [paelex], the cohabiting with a kept mistress, concubinage: ab ea est propter pelicatus suspitionem interfectus, Cic. Off. 2, 7, 25: Arinis uxorem pelicatus dolore concitatam, id. Scaur, 6, 9, B. and K. (Fragm. ap. Prisc. p. 689 P.): matris, id. Clu. 5, 13; Just. 7, 4, 7; Vulg. Lev. 18, 18.