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volunteer

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noun [countable] American English pronunciation: volunteer /ˌvɑlənˈtɪr/ 
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singularvolunteer
pluralvolunteers

Related dictionary definitions

  1. 1
    someone who offers to do something without being forced

    Can I have a volunteer to erase the chalkboard, please?

    volunteer for:

    Doctors need 50 healthy volunteers for the diet.

  2. 2
    someone who is not paid for the work that they do

    a volunteer worker

    The organization is appealing for volunteers.

    volunteers who tutor high school students

    a small team of volunteers

    volunteer for:

    He is a volunteer for the Gay Helpline.

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a style of loose-fitting jeans with a high waist, often considered unfashionable

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