noun one who advocates voluntaryism.
2. voluntary ·vt proceeding from the will; produced in or by an act of choice.
3. voluntary ·noun one who engages in any affair of his own free will; a volunteer.
4. voluntary ·vt endowed with the power of willing; as, man is a voluntary agent.
5. voluntary ·vt of or pertaining to voluntaryism; as, a voluntary church, in distinction from an established or state church.
6. voluntary ·noun a piece played by a musician, often extemporarily, according to his fancy; specifically, an organ solo played before, during, or after divine service.
7. voluntary ·vt free; without compulsion; according to the will, consent, or agreement, of a party; without consideration; gratuitous; without valuable consideration.
8. voluntary ·vt done by design or intention; intentional; purposed; intended; not accidental; as, if a man kills another by lopping a tree, it is not voluntary manslaughter.
9. voluntary ·vt unconstrained by the interference of another; unimpelled by the influence of another; not prompted or persuaded by another; done of his or its own accord; spontaneous; acting of one's self, or of itself; free.
10. voluntary ·vt of or pertaining to the will; subject to, or regulated by, the will; as, the voluntary motions of an animal, such as the movements of the leg or arm (in distinction from involuntary motions, such as the movements of the heart); the voluntary muscle fibers, which are the agents in voluntary motion.