Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
ĭnhŏnestāmentum, i, n. [inhonesto], dishonor, disgrace, shame (ante- and postclass.): pueritia tua adulescentiae tuae inhonestamentum fuit, Gracch. ap. Isid. Orig. 2, 21; App. Mag. p. 275, 13.