LYING Copy link • LYING 1. mendax (Vid: the proper word; ☞ in classical prose never of things): fallax (deceitful): vanus (empty, both of persons or things). (The words are found in this connection and order.) vanus et mendax, vanus et fallax: vaniloquus (bragging, of persons): falsus, fictus (false, pretended, of things): ☞ mendaciloquus is comic. 2. s. Vid: LIE.