(music) A short piece of music, often having improvisation, played on a solo instrument. / A volunteer. / A supporter of voluntarism; a voluntarist.

(obsolete) Voluntarily.

Done, given, or acting of one's own free will. / Done by design or intention; intentional. / Working or done without payment. / Endowed with the power of willing. / Of or relating to voluntarism.

plural of voluntariness

plural of voluntary

The condition of being voluntary.

(dated) A period of voluntary military service

Work done voluntarily.

(anatomy) Muscle that is normally controlled by individual volition; skeletal muscle.

(law) A person (also called gestor) who acts on behalf of another (dominus), without the latter's prior consent. Such agency is called negotiorum gestio.