volunteer

US /ˌvɑlənˈtɪr/

UK /ˌvɒlən'tɪə(r)/

B2TOEIC
adj.AdjectiveWorking willingly without pay to help others
He is a volunteer driver, he will take you home for free
n. (c.)Countable NounPerson who helps others without being paid
We need a volunteer to help prepare the party
v.i.Intransitive VerbTo work willingly without pay to help others
I will volunteer to help you teach the children
v.t.Transitive VerbTo offer (something, such as one's services or time) freely.
He volunteered to help clean up after the event.
n. (c.)Countable NounA person who enters military service voluntarily.
He was a volunteer in the army.

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