Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
† plătĭcus, a, um, adj., = πλατικός, general, compendious, summary (post-class.): dispositio, Firm. Math. 3, 2.
Adv.: plă-tĭcē, in general, generally (post-class.): platice institui, Firm. Math. 2, 16.