Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
flŭvĭātĭlis, e, adj. [fluvius], of or belonging to a river, river- (class.): testudines, Cic. N. D. 2, 48, 124: naves, Liv. 10, 2, 12: negotium, Col. 8, 17, 7.