THESAURUS
Voluntary
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
ROGET THESAURUS
Voluntary
Will
N
will, volition, conation, velleity, liberum arbitrium, will and pleasure, free will, freedom, discretion, option, voluntariness, spontaneity, spontaneousness, originality, pleasure, wish, mind, desire, frame of mind, intention, predetermination, selfcontrol, determination, force of will, voluntary, volitional, willful, free, optional, discretional, discretionary, volitient, volitive, minded, prepense, intended, autocratic, unbidden &c (bid), spontaneous, original, unconstrained, voluntarily, at will, at pleasure, a volonte, a discretion, al piacere, ad libitum, ad arbitrium, as one thinks proper, as it seems good to, a beneplacito, of one's won accord, of one's own free will, proprio motu, suo motu, ex meromotu, out of one's won head, by choice, purposely, deliberately, stet pro ratione voluntas, sic volo sic jubeo, a vostro beneplacito, beneficium accipere libertatem est vendere, Deus vult, was man nicht kann meiden muss man willig leiden.
Willingness
N
willingness, voluntariness, willing mind, heart, disposition, inclination, leaning, animus, frame of mind, humor, mood, vein, bent, penchant, aptitude, docility, docibleness, persuasibleness, persuasibility, pliability, geniality, cordiality, goodwill, alacrity, readiness, earnestness, forwardness, eagerness, asset, compliance, pleasure, gratuitous service, labor of love, volunteer, volunteering, willing, minded, fain, disposed, inclined, favorable, favorably- minded, favorably inclined, favorably disposed, nothing loth, in the vein, in the mood, in the humor, in the mind, ready, forward, earnest, eager, bent upon, predisposed, propense, docile, persuadable, persuasible, suasible, easily persuaded, facile, easy-going, tractable, genial, gracious, cordial, cheering, hearty, content, voluntary, gratuitous, spontaneous, unasked &c (ask), unforced, willingly, fain, freely, as lief, heart and soul, with pleasure, with all one's heart, with open arms, with good will, with right will, de bonne volonte, ex animo, con amore, heart in hand, nothing loth, without reluctance, of one's own accord, graciously, with a good grace, a la bonne heure, by all means, by all manner of means, to one's heart's content, yes.