Entry 2 senses Webster, 1913 Proditorious · Prod·i·to·ri·ous · IPA /pɹɑd.ɪˈtɔ.ɹi.əs/ 01 a. Treacherous; perfidious; traitorous. 1. Treacherous; perfidious; traitorous.[Obs.] 2. Apt to make unexpected revelations.[Obs.]