Found 2 items, similar to pestilential.
English → English (WordNet) Definition: pestilential pestilential adj : likely to spread and cause an epidemic disease; “a pestilential malignancy in the air”- Jonathan Swift; “plaguey fevers” [syn: pestilent, pestiferous, plaguey]
English → English (gcide) Definition: Pestilential Pestilential \Pes`ti*len"tial\, a. [Cf. F. pestilentiel.] 1. Having the nature or qualities of a pestilence. “Sends the pestilential vapors.” --Longfellow. [1913 Webster] 2. Hence: Mischievous; noxious; pernicious; morally destructive. [1913 Webster] So pestilential, so infectious a thing is sin. --Jer. Taylor. [1913 Webster]