perditious

== English == === Etymology === From perdition +‎ -ous, formed within English. === Pronunciation === IPA(key): /pɜː(ɹ)ˈdɪ.ʃəs/ === Adjective === perditious (comparative more perditious, superlative most perditious) (rare) Damning, ruinous; leading to perdition. Harmful. [from 1600] === References === “perditious, adj.”, in OED Online ⁠, Oxford: Oxford University Press, launched 2000.