Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
fraudŭlentĭa, ae, f., deceitfulness, a disposition to defraud: mentientium, Hilar. ap. Matt. 4, 23: simulatae mentis, id. ib. 22, 7; id. Trin. 1, 25; Ambros. Ep. 2, §§ 13, 16; Vulg. Job, 13, 9 (but in Plaut. Ps. 2, 1, 7, the correct read. is, fraudulenta; and id. Mil. 2, 2, 34, the whole verse is spurious; v. Ritschl and Lorenz ad h. l.).