Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
immŏdestĭa (inm-), ae, f. [immodestus], intemperate conduct, immodesty, licentiousness (very rare; not in Cic.): heri haec immodestia me coëgit, qui, etc., Plaut. Am. 1, 1, 9: publicanorum, avarice, extortion, Tac. A. 13, 50: histrionum, id. ib. 4, 14.