volunteer
     adj : without payment; "the soup kitchen was run primarily by
           unpaid helpers"; "a volunteer fire department" [syn: {unpaid},
            {volunteer(a)}]
     n 1: (military) a person who freely enlists for service [syn: {military
          volunteer}, {voluntary}] [ant: {draftee}]
     2: a person who performs voluntary work [syn: {unpaid worker}]
     v 1: tell voluntarily; "He volunteered the information"
     2: agree freely; "She volunteered to drive the old lady home";
        "I offered to help with the dishes but the hostess would
        not hear of it" [syn: {offer}]
     3: do volunteer work
Source: WordNet® 2.0