Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
pălūdōsus, a, um, adj. [2. palus], fenny, boggy, marshy (poet.): humus, Ov. M. 15, 268; Prop. 4 (5), 6, 77: Nilus, Stat. S. 3, 2, 108: Ravenna, Sil. 8, 602.