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English definition of “foul”

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foul

adjective uk   /faʊl/ us  
C1 extremely unpleasant: Those toilets smell foul! I've had a foul day at work. Why are you in such a foul mood this morning? What foul weather!C1 Foul speech or other language is offensive, rude, or shocking: There's too much foul language on TV these days.

foul

noun [C] uk   /faʊl/ us  
C2 an act that is against the rules of a sport, often causing injury to another player: He was sent off for a foul on the French captain.

foul

verb uk   /faʊl/ us  

foul verb (MAKE DIRTY)

[T] formal to spoil or damage something by making it dirty: Penalty for dogs fouling the pavement - £50.

foul verb (SPORT)

[I or T] to do something against the rules of a sport, often causing injury to another player
Phrasal verbs
(Definition of foul from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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