| Noun | 1. | voluntary - (military) a person who freely enlists for service | |
| 2. | voluntary - composition (often improvised) for a solo instrument (especially solo organ) and not a regular part of a service or performancesolo - a musical composition for one voice or instrument (with or without accompaniment) | |
| Adj. | 1. | voluntary - of your own free will or design; not forced or compelled; "man is a voluntary agent"; "participation was voluntary"; "voluntary manslaughter"; "voluntary generosity in times of disaster"; "voluntary social workers"; "a voluntary confession"conscious - knowing and perceiving; having awareness of surroundings and sensations and thoughts; "remained conscious during the operation"; "conscious of his faults"; "became conscious that he was being followed" willing - disposed or inclined toward; "a willing participant"; "willing helpers" involuntary, nonvoluntary, unvoluntary - not subject to the control of the will; "involuntary manslaughter"; "involuntary servitude"; "an involuntary shudder"; "It (becoming a hero) was involuntary. They sank my boat"- John F.Kennedy | |
| 2. | voluntary - controlled by individual volition; "voluntary motions"; "voluntary muscles"physiology - the branch of the biological sciences dealing with the functioning of organisms involuntary - controlled by the autonomic nervous system; without conscious control; "involuntary muscles"; "gave an involuntary start" | |