Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
quaestĭuncŭla, ae, f. dim. [quaestio], a little or trifling question (class.): quaestiunculam alicui ponere, Cic. de Or. 1, 22, 102; Sen. Ep. 117, 1: multae, Cic. Leg. 2, 20, 51; Quint. 1, 3, 11; Suet. Gram. 24 fin.