PESTILENT
Source: 566, 567
pestilent|pestilential. Pestilent, or Pestilential, a. infectious, pernicious
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Pes″ti‐lent (?), a. [[L. pestilens, -entis, fr. pestis pest: cf. F. pestilent.]] Pestilential; noxious; pernicious; mischievous. “Corrupt and pestilent.” Milton. “What a pestilent knave is this same!” Shak.