A person who freely offers to take part in an enterprise or undertake a task.
The shop is run by volunteers.
Many people choose to become a volunteer for charitable organizations without expecting any payment.
The local community organized a clean-up event, and I decided to volunteer my time to help.
She has been a dedicated volunteer at the animal shelter for several years, caring for abandoned pets.
As a volunteer firefighter, he bravely responded to emergency calls to protect the community.
