Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
dēlīrus, a, um, adj. [deliro, no. II.], silly, doting, crazy (class.): dementit deliraque fatur, Lucr. 3, 464: delira furiosaque, id. 2, 985; with amens, Hor. S. 2, 3, 107: senex, Cic. de Or. 2, 18, 75; Hor. S. 2, 5, 71: anus, Cic. Tusc. 1, 21, 48; id. Div. 2, 68, 141: mater, Hor. S. 2, 3, 293: scriptor, id. Ep. 2, 2, 126 et saep.