[ bih-foul ]
See synonyms for: befoulbefoulment on

verb (used with object)
  1. to make dirty or filthy; soil; defile; sully: a bird that befouls its own nest.

Origin of befoul

First recorded in 1275–1325, befoul is from the Middle English word bi-foulen.See be-, foul

Other words from befoul

  • be·foul·er, noun
  • be·foul·ment, noun

Words Nearby befoul Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use befoul in a sentence

  • The fumes of tobacco befoul the air around, and public health suffers in consequence.

    A Guide to Health | Mahatma Gandhi
  • I could not prevent myself from saying, "Do you think it is nice to befoul your own nest?"

    My Actor-Husband | Anonymous

British Dictionary definitions for befoul


/ (bɪˈfaʊl) /

  1. (tr) to make dirty or foul; soil; defile

Derived forms of befoul

  • 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