Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* hĭlărŭlus, a, um, adj. dim. [hilaris], cheerful, contented: Atticae, quoniam, quod optimum in pueris est, hilarula est, meis verbis suavium des, Cic. Att. 16, 11 fin.