Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
phaecăsĭātus, a, um, adj. [phaecasium], shod with phaecasia: milites, Petr. 72: quae decent phaecasiatum palliatumque, i. e. a Grecian philosopher, Sen. Ep. 113, 2.