Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
fornĭcārĭus, ii, m., and fornĭcārĭa, ae, f. [fornix, II.], a fornicator; a prostitute, Tert. Anim. 35; id. Pudic. 9; 16; cf. Isid. Orig. 10, 110; Hier. Ep. 53, 8; Vulg. Isa. 57, 3 al.: fornicaria πόρνη ἀπὸ καμάρας, Vet. Gloss.