Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
per-vĭrĭdis, e, adj., very green: campus, Mel. 2, 5, 7: color, Plin. 6, 22, 24, § 87; Sol. 53, 21; Front. Aquaed. 7 (al. praeviridis).