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[bih-foul] /bɪˈfaʊl/
verb (used with object)
to make dirty or filthy; soil; defile; sully:
a bird that befouls its own nest.
Origin of befoul
1275-1325; Middle English bi-foulen. See be-, foul
Related forms
befouler, noun
befoulment, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for befouled
  • The ash barrels which had befouled the sidewalks disappeared, almost without any one knowing it till they were gone.
  • The money spent on college building that are damaged and befouled by drunken students is not is built into every college's budget.
  • It could never thrive in this befouled and selfish, soulless climate.
  • Navigational buoys have sunk under their weight, and their razor-sharp shells have befouled beaches.
  • The ash barrels which had befouled the sidewalks disappeared.
  • The ash barrels which had befouled the sidewalks disappeared.
  • Before the spill slackened, oil driven onshore by the severe winter storms befouled the harbor.
  • Khalil gives a sickening description of how his house was looted and befouled.
British Dictionary definitions for befouled


(transitive) to make dirty or foul; soil; defile
Derived Forms
befouler, noun
befoulment, noun
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
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Word Origin and History for befouled



early 14c., from be- + foul (v.). Related: Befouled; befouling.

Online Etymology Dictionary, © 2010 Douglas Harper
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