voluntary (adj.)

late 14c., from Latin voluntarius "willing, of one's free will," from voluntas "will," from the ancient accusative singular present participle of velle "to wish" (see will (v.)). Originally of feelings, later also of actions (mid-15c.). Related: Voluntarily.

updated on March 18, 2014

Definitions of voluntary from WordNet
voluntary (n.)
(military) a person who freely enlists for service;
Synonyms: volunteer / military volunteer
voluntary (n.)
composition (often improvised) for a solo instrument (especially solo organ) and not a regular part of a religious service or musical performance;
voluntary (adj.)
of your own free will or design; done by choice; not forced or compelled;
participation was voluntary
voluntary generosity in times of disaster
a voluntary confession
man is a voluntary agent
voluntary manslaughter
voluntary social workers
voluntary (adj.)
controlled by individual volition;
voluntary muscles
voluntary motions
Etymologies are not definitions. From, not affiliated with etymonline.