Adjective volunteer has 1 sense
  1. unpaid, volunteer - without payment; "the soup kitchen was run primarily by unpaid helpers"; "a volunteer fire department"
    Antonyms: involuntary, nonvoluntary, unvoluntary (indirect, via voluntary)
,Noun volunteer has 2 senses
  1. volunteer, military volunteer, voluntary - (military) a person who freely enlists for service
    --1 is a kind of serviceman, military man, man, military personnel
    Antonyms: draftee, conscript, inductee
  2. volunteer, unpaid worker - a person who performs voluntary work
    --2 is a kind of worker
    --2 has particulars: candy striper; pledge taker; vigilante, vigilance man
    Derived form: verb volunteer3
,Verb volunteer has 3 senses
  1. volunteer - tell voluntarily; "He volunteered the information"
    --1 is one way to
    Sample sentences:
    Somebody ----s something
    Somebody ----s that CLAUSE
  2. volunteer, offer - 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"
    --2 is one way to act, move
    Sample sentence:
    They volunteer to move
  3. volunteer - do volunteer work
    --3 is one way to
    Derived forms: noun volunteer2, noun voluntary1
    Sample sentences:
    Somebody ----s
    Somebody ----s PP