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English definition of “foul”

foul

verb     /faʊl/
DIRTY [T] to make something very dirty : The beaches had been fouled by dogs .Environmental issuesRubbish and wasteProtection and protectorsMaking things dirty and untidy
SPORT [I, T] to do something that is against the rules in a sport : He was fouled as he was about to shoot at goal .General terms used in ball sports
(Definition of foul verb from the Cambridge Learner's Dictionary © Cambridge University Press)

Definitions of “foul” in other dictionaries

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