volunteer

nouns

(military) a person who freely enlists for service

antonym

a person who performs voluntary work

unpaid worker, volunteer

tell voluntarily

"He volunteered the information"

volunteer

is a type of (narrower)

impart knowledge of some fact, state or affairs, or event to

"I informed him of his rights"

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"

offer, volunteer

do volunteer work

volunteer

is derived from

is a type of (narrower)

exert oneself by doing mental or physical work for a purpose or out of necessity

"I will work hard to improve my grades"; "she worked hard for better living conditions for the poor"

without payment

"the soup kitchen was run primarily by unpaid helpers"; "a volunteer fire department"

unpaid, volunteer