Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
illībĕrālĭtas (inl-), ātis, f. [illiberalis], conduct unworthy of a freeman, ignoble or ungenerous behavior, meanness, stinginess (very rare): habenda est ratio rei familiaris, sed ita, ut illiberalitatis avaritiaeque absit suspicio, Cic. Off. 2, 18, 64; id. Att. 8, 6, 3.