[ pes-tl-en-shuh l ]
/ ˌpɛs tlˈɛn ʃəl /


producing or tending to produce pestilence.
pertaining to or of the nature of pestilence, especially bubonic plague.
pernicious; harmful.
annoyingly troublesome.

Nearby words

  1. pesticide,
  2. pestiferous,
  3. pestiferously,
  4. pestilence,
  5. pestilent,
  6. pestle,
  7. pesto,
  8. pesty,
  9. pet,
  10. pet name

Origin of pestilential

First recorded in 1350–1400; Middle English word from Medieval Latin word pestilentiālis. See pestilent, -ial

Related forms Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pestilential

British Dictionary definitions for pestilential


/ (ˌpɛstɪˈlɛnʃəl) /


dangerous or troublesome; harmful or annoying
of, causing, or resembling pestilence
Derived Formspestilentially, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for pestilential



late 14c., from Medieval Latin pestilentialis, from Latin pestilentia "plague" (see pestilence). Related: Pestilentially.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for pestilential


[ pĕs′tə-lĕnshəl ]


Of, relating to, or tending to produce a pestilence.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.