volunteer - definition and synonyms

 
verb 

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/ˌvɒlənˈtɪə(r)/
present tense
I/you/we/theyvolunteer
he/she/itvolunteers
present participlevolunteering
past tensevolunteered
past participlevolunteered
  1. 1
    [intransitive/transitive] to offer or choose to do something without being forced
    volunteer to do something:

    An accountant volunteered to help with the wildlife sanctuary’s accounts.

    volunteer for:

    Thirty-two patients volunteered for the research study.

    volunteer your services (as something):

    I volunteered my services as a school governor.

  2. 2
    [intransitive/transitive] to do some work without getting paid

    Claire volunteers at the homeless shelter once a week.

  3. 3
    [intransitive/transitive] to say something, or to give information without being asked
    volunteer information/a suggestion/an opinion:

    He didn’t ask me, and I didn’t volunteer any information.

    volunteer that:

    Martha volunteered that they planned to adopt a child.

  4. 4
    [intransitive] to agree to join the armed forces without being forced
  5. 5
    [transitive] to say that someone else will do something before asking them if they are willing to do it

    My mother has volunteered me to help with the school play.