Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
mortĭfĭco, 1, v. a. [mortificus], to kill, destroy (eccl. Lat.): caro mortificatur, Tert. Res. Carn. 37.
Transf., to mortify, subject, reduce to weakness: membra, Vulg. Col. 3, 5: facta carnis, id. Rom. 8, 13; cf. id. ib. 7, 4.