Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
insŭāvĭtas, ātis, f. [insuavis], unpleasantness, disagreeableness (post-class.): per insuavitatem medentur, Tert. ad Martyr. 3; Poen. 10: dictionis, Gell. 1, 21, 4; Cael. Aur. Acut. 2, 19, 115.