Voluntary

Adjective

 * 1) Done, given, or acting of one's own free will.
 * 2) Working or done without payment.

Synonyms

 * discretionary
 * optional
 * willful
 * volitional

Antonyms

 * compulsory
 * obligatory
 * involuntary

Derived terms

 * voluntarily

Related terms

 * volition
 * voluntarism
 * voluntarist
 * volunteer
 * will

Noun

 * 1)  A short piece of music, often having improvisation, played on a solo instrument
 * 2) A volunteer

Adverbs for Voluntary
freely; generously; impetuously; eagerly; earnestly; energetically; emphatically; unmistakably; undoubtedly; unquestionably; usually; frankly; necessarily; amicably; delightfully; completely.

Thesaurus
Vorspiel, advised, aimed, aimed at, alternative, arbitrary, autonomous, avant-propos, breakthrough, calculated, chosen, conative, concert overture, conscious, considered, contemplated, curtain raiser, deliberate, deliberated, descant, designed, discretional, discretionary, disjunctive, dramatic overture, elected, elective, envisaged, envisioned, exordium, foreword, free, free will, front matter, frontispiece, gratuitous, independent, innovation, intended, intentional, introduction, knowing, leap, meant, meditated, nonmandatory, of design, offered, operatic overture, optional, overture, planned, postulate, preamble, preface, prefix, prefixture, preliminary, prelude, premeditated, premise, presupposition, proem, proffered, projected, prolegomena, prolegomenon, prolepsis, prologue, proposed, protasis, purposed, purposeful, purposive, self-acting, self-active, self-determined, self-determining, spontaneous, studied, teleological, unasked, unbesought, unbidden, uncalled-for, uncoerced, uncompelled, unconstrained, unforced, uninfluenced, uninvited, unpressured, unprompted, unrequested, unrequired, unsolicited, unsought, vamp, verse, volitional, volunteer, willful, willing, witting

Etymology
From *undefined: <  volontaire: <  voluntarius: < voluntas: < volens:, present participle of velle:.

Adjective

 * Czech:
 * Dutch:
 * Esperanto: volonta
 * Finnish: ,
 * French:
 * German:


 * Greek: εκούσιος, εθελοντικός,  προαιρετικός,  εθελούσιος
 * Japanese: 志願して (shigan-shite)
 * Scottish Gaelic:
 * Telugu: స్వచ్ఛంద (svachchhanda)


 * Czech:
 * Finnish: vapaaehtoinen, vapaaehtois-, talkoo-
 * French:


 * German: ohne Bezahlung, ehrenamtlich
 * Greek: εθελοντικός
 * Scottish Gaelic: