Choose the perfect synonym or antonym for the word

Volunteer

/ˌvɒlənˈtɪə/

A person who offers to do something without being paid or required to do it.

Synonyms:

"For the kids at home," he volunteered, rather shamefacedly.

D'Artagnan asked for four volunteers to go with him.

"You'll be all right, Frank," he volunteered, pinching his ear lightly.

Originates from the Middle French volontaire meaning willing or of ones own will, and from Latin voluntarius, which translates to of ones free will.

33 mentions per 1 million words

Often

Hint: Frequency according to COCA