Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
in-sēdābĭlis, e, adj. [2. in-sedo], that cannot be stayed or stilled, incessant: insedabilis, ἀκατάπαυστος, Gloss. Philox.
* Adv.: insēdābĭlĭter, unquenchably, incessantly: sitis arida, Lucr. 6, 1175.