Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
quantŭlus, a, um, adj. dim. [quantus], how little, how small, how trifling (class.): nescio quantulum attulerit: verum haud permultum attulit, Plaut. Bacch. 2, 3, 86: corpora, Lucr. 3, 378: quantulum visum est, as much as seems good to him, Cic. Div. in Caecil. 17, 57: quantulus (sol) nobis videtur! Cic. Ac. 2, 26, 82: id autem quantulum est? how small? id. Leg. 2, 19, 47: quantula sint hominum corpuscula, Juv. 10, 172; Plin. 11, 5, 4, § 12: quantulum est mihi memoriae, as much as I remember, i. e. as little as, Gell. 17, 10, 9; Hor. S. 2, 3, 124; Plin. Pan. 8, 4.
Quantulus quantulus, for quantuluscumque, how little, how small, how trifling soever: aderant tres illi fratres cladibus amici quantulumquantulum ferentes auxilii, App. M. 9, p. 233, 35.
Neutr. adverb.: quantŭlum, how little: quantulum judicare possemus, Cic. Verr. 2, 3, 1, § 3.