Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
scurrīlĭtas, ātis, f. [scurrilis], buffoonery, scurrility (post-Aug.), Quint. 11, 1, 30: insulsa, Tac. Or. 22; Vulg. Eph. 5, 4.