American Dictionary

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Definition volunteer in American English

volunteer noun

[countable] noun
/ˌvɑlənˈtɪr/
1

someone who offers to do something without being forced

Example

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

Example

Doctors need 50 healthy volunteers for the diet.

Synonyms and related words
2

someone who is not paid for the work that they do

Example

a volunteer worker

Example

The organization is appealing for volunteers.

Example

a small team of volunteers

Example

He is a volunteer for the Gay Helpline.

Synonyms and related words
3

someone who joins the military without being forced

Synonyms and related words
Definition volunteer in American English