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clash

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verb British English pronunciation: clash /klæʃ/ 
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present tense
I/you/we/theyclash
he/she/itclashes
present participleclashing
past tenseclashed
past participleclashed
 
  1. 1
    [intransitive] mainly journalism to argue very angrily with someone
    clash with someone over something:

    Morgan clashed with editors over whether to publish the story.

  2. 2
    [intransitive] mainly journalism if two groups of people clash, they suddenly start fighting with each other
    clash with:

    Angry students clashed with riot police in Miami yesterday.

  3. 3
    [intransitive] if two events clash, they happen at the same time, so that you cannot be present at both of them
    clash with:

    The conference dates clash with John's wedding.

  4. 4
    [intransitive] if two colours, patterns etc clash, they do not look good together
    clash with:

    His T-shirt clashed with his shorts.

  5. 5
    [intransitive] mainly journalism if two teams or players clash, they play an important game or competition against each other

    The two teams clashed in the third round of the cup.

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