Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
paupercŭlus, a, um, adj. dim. [id.], poor (not in Cic.): senex, Plaut. Aul. 2, 1, 49: anus, Ter. Heaut. 1, 1, 44: sumus pauperculi, Plaut. Poen. 3, 1, 33; Varr. R. R. 1, 17: mater, Hor. Ep. 1, 17, 46: vidua, Vulg. Luc. 21, 2.
Of things: res nostrae sunt, pater, pauperculae, Plaut. Pers. 3, 1, 17.