verb \bi-ˈfa(-ə)l, bē-\

: to make (a substance, place, etc.) dirty

Full Definition of BEFOUL

transitive verb
:  to make foul (as with dirt or waste)
:  sully, soil, besmirch <scandal befouled his reputation>

Examples of BEFOUL

  1. pollutants that befoul the air and water
  2. <unsightly mud and slush befouls the family car every winter>

First Known Use of BEFOUL

12th century


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