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volunteer

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noun [countable] volunteer pronunciation in British English /ˌvɒlənˈtɪə(r)/ 
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singularvolunteer
pluralvolunteers

Related dictionary definitions

  1. 1
    someone who is not paid for the work that they do

    The organization is appealing for volunteers.

    a volunteer worker

    a small team of volunteers

    volunteer for:

    He is a volunteer for the Gay Helpline.

  2. 2
    someone who offers to do something without being forced

    Can I have a volunteer to clean the board, please?

    volunteer for:

    Doctors need 50 healthy volunteers for the diet.

creep

used with other nouns to describe the unexpected and often unwanted effects of a particular situation or trend

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