Third-person singular simple present indicative form of befoul.(verb)
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Use "befouls" in a sentence
"He may be the fashion of Paris and at Court, but down here his very name befouls the air."
"The musty smell that befouls clothes left to sit in the washing machine after washing is the top "unmet consumer concern in the laundry room," according to a Whirlpool Corporation survey."
"And how did it come to eclipse the idea of simply slapping a tax on energy consumption that befouls the public square or leaves the nation hostage to foreign oil producers?"