American English

Definition of foul verb from the Oxford Advanced American Dictionary



    Verb Forms present simple I / you / we / they foul
    he / she / it fouls
    past simple fouled
    -ing form fouling
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  1. 1[transitive] foul somebody (in sports) to do something to another player that is against the rules of the game He was fouled as he tried to make a shot.
  2. 2[intransitive, transitive] foul (something) (in baseball) to hit the ball outside the playing area
  3. 3[transitive] foul something to make something dirty, usually with waste material Do not permit your dog to foul the grass. More and more beaches are being fouled by oil spills.
  4. 4[transitive, intransitive] to become caught or twisted in something and stop it from working or moving foul something (up) The rope fouled the propeller. The line became fouled in (= became twisted in) the propeller. foul (up) A rope fouled up (= became twisted) as we pulled the sail down.
  5. Phrasal Verbsfoul outfoul upfoul somethingup
See the Oxford Advanced Learner's Dictionary entry: foul