VOLUNTARY

[adjective] [not gradable] - done, made or given willingly, without being forced or paid to do itIs it voluntary, or do we have to go?They chose to take voluntary redundancy.It's a charitable organization, depending for its income upon voluntary contributions from the public.She does voluntary work for the Red Cross two days a week.A voluntary organization is one that is controlled and supported by people who give their time and money to it without being paid and that exists to help other people.The hospital has asked various voluntary organizations to help raise money for the new operating theatre.