[ 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

First recorded in 1275–1325, befoul is from the Middle English word bi-foulen. See be-, foul
Related formsbe·foul·er, nounbe·foul·ment, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for befouled

British Dictionary definitions for befouled


/ (bɪˈfaʊl) /


(tr) to make dirty or foul; soil; defile
Derived Formsbefouler, nounbefoulment, 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

Word Origin and History for befouled



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

Online Etymology Dictionary, © 2010 Douglas Harper