Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pītŭītōsus, a, um, adj. [root pitu- for sputu-, from spu- of spuo, sputum; cf. Gr. ], full of phlegm, phlegmatic, pituilous: homo, Cic. Fat. 4, 7.