A voluntary hostage; voluntary community work.
A voluntary decision to leave the job.
An example of voluntary used as an adjective is a voluntary assignment which means that students can do it if they want, but they don't have to.
If a man accidentally kills another by lopping a tree, it is not voluntary manslaughter.
A voluntary church, in distinction from an established or state church.
Voluntary muscle contractions.
Man is a voluntary agent.
Origin of voluntary
- Middle English from Latin voluntārius from voluntās choice from velle vol- to wish wel-1 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English *voluntarie, from Old French volontaire, from Latin voluntarius (“willing, of free will"), from voluntas (“will, choice, desire"), from volens, present participle of velle (“to will").