Verb
/biˈfoul/,
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befouled, past participle; befouling, present participle; befouled, past tense; befouls, 3rd person singular present;
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Make dirty; pollute
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they befoul our water with mining
Web Definitions:
- (befouled) made dirty or foul; "a building befouled with soot"; "breathing air fouled and darkened with factory soot"