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collaborate

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verb [intransitive] American English pronunciation: collaborate /kəˈlæbəˌreɪt/ 
Word Forms
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present tense
I/you/we/theycollaborate
he/she/itcollaborates
present participlecollaborating
past tensecollaborated
past participlecollaborated
  1. 1
    to work with someone in order to produce something
    collaborate with:

    We have been collaborating closely with teachers in devising the lesson plans.

    collaborate in/on:

    She directed the film and collaborated with Goldman on the script.

  2. 2
    to work secretly to help an enemy or opponent
    collaborate with:

    He still denies that he collaborated with the Nazis.

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