Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
Longŭla, ae, f.,
longŭlus, a, um, adj. dim. [longus], rather long: iter, Cic. Att. 16, 13, a.
Hence, adv.: longŭlē, rather far: haud longule ex hoc loco, Plaut. Rud. 1, 5, 8; id. Men. prol. 64; Ter. Heaut. 2, 2, 10; App. M. 9, p. 224.