■ adjective
1》 done, given, or acting of one's own free will.
↘ Physiology under the conscious control of the brain.
2》 working or done without payment.
↘ Law (of a conveyance or disposition) made without return in money or other consideration.
■ noun ( plural voluntaries )
1》 an organ solo played before, during, or after a church service.
↘ historical a piece of music performed extempore or composed in a free style.
2》 (in a competition) a special performance left to the performer's choice.
Derivatives
voluntarily adverb
voluntariness noun
Origin
ME: from OFr. volontaire or L. voluntarius , from voluntas 'will'.