Pestilent :: Pestilent (a.) Pestilential; noxious; pernicious; mischievous.
Pestilential :: Pestilential (a.) Having the nature or qualities of a pestilence.
Pestilential :: Pestilential (a.) Hence: Mischievous; noxious; pernicious; morally destructive.
Pestilently :: Pestilently (adv.) In a pestilent manner; mischievously; destructively.