Webster’s Revised Unabridged Dictionary · 1913
Proditorious
Prod′i·to′ri·ous (·tō′rĭ·ŭs), a. [Cf. OF. proditoire.]
1. Treacherous; perfidious; traitorous. [Obs.] Daniel.
2. Apt to make unexpected revelations. [Obs.] "Nature is proditorious." Sir H. Wotton.