Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
quaestĭcŭlus, i, m. dim. [quaestus], a small profit, slight gain (class.), Cic. Div. 2, 15, 34; id. Fam. 9, 16, 7; App. M. 11, p. 272, 1.