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1. Done or undertaken of one's own free will: a voluntary decision to leave the job.
2. Acting or done willingly and without constraint or expectation of reward: a voluntary hostage; voluntary community work.
3. Normally controlled by or subject to individual volition: voluntary muscle contractions.
4. Capable of making choices; having the faculty of will: "This law of happiness ... resides in the exercise of the active capacities of a voluntary agent" (John Dewey).
5. Supported by contributions or charitable donations rather than by government appropriations: voluntary hospitals.
6. Law
a. Without legal obligation or consideration: a voluntary conveyance of property.
b. Done intentionally but without premeditation or deliberation, as when under the influence of an intense emotional reaction: voluntary manslaughter.
n. pl. vol·un·tar·ies
1. Music
a. A short piece of music, often improvised on a solo instrument, played as an introduction to a larger work.
b. A piece for solo organ, often improvised, played before, during, or after a religious service.
2. A volunteer.

[Middle English, from Latin voluntārius, from voluntās, choice, from velle, vol-, to wish; see wel- in Indo-European roots.]

vol′un·tar′i·ly (-târ′ə-lē) adv.
vol′un·tar′i·ness n.
Synonyms: voluntary, intentional, deliberate, willful, willing
These adjectives mean being or resulting from one's own free will. Voluntary implies the operation of unforced choice: "Ignorance, when it is voluntary, is criminal" (Samuel Johnson).
Intentional applies to something undertaken to further a plan or realize an aim: "I will abstain from all intentional wrongdoing and harm" (Hippocratic Oath).
Deliberate stresses premeditation and full awareness of the character and consequences of one's acts: taking deliberate and decisive action. Willful implies deliberate, headstrong persistence in a self-determined course of action: a willful waste of time. Willing suggests ready or cheerful acquiescence in the proposals or requirements of another: "The first requisite of a good citizen ... is that he shall be able and willing to pull his weight" (Theodore Roosevelt).
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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In the exaltation of the reason or intellect, in the denial of the voluntariness of evil (Timaeus; Laws) Spinoza approaches nearer to Plato than in his conception of an infinite substance.
Using these three benchmarks, courts could apply a more comprehensive voluntariness test in a hard-lined, standardized manner.
Much of the data provided by the interviewees indicated that recommendations found in the literature for increasing participant understanding and ensuring voluntariness were being followed.
Miller and Nelson (2012) examined voluntariness of parents making research or treatment decisions in pediatric oncology.
In a statesmanlike gesture, Prime Minister Narasimha Rao permitted UNHCR presence in Chennai to verify the voluntariness of repatriation, thereby diffusing an ugly situation.
I also argued that the doctrine's "seductive appeal" lulled defense counsel into a false sense of security, thereby deflecting reliance on the "voluntariness" standard as a failsafe to Miranda.
Chapters address the voluntariness standard, the Miranda approach, and the 6th Amendment right-to-counsel approach.
Voluntariness reflects the extent to which temporary workers prefer their employment status.
This principle is based on the voluntariness of the perpetrator.
separate and apart from a voluntariness determination, as a threshold to
(74) Until Prohibition, however, courts considering the voluntariness of