Synonyms of voluntary

1 Syllable
free, wished
2 Syllables
willful, willing, chosen, studied, thought-through, opted, freely, willed, express, witting, unpaid
3 Syllables
unasked, spontaneous, optional, elected, intended, designful, unbidden, thought-about, volunteer, free-willed, gratuitous, unforced
4 Syllables
intentional, uncompelled, autonomous, unprescribed, unsalaried, volitional, honorary, considered, independent, unconstrained, elective, discretional, predesigned
5 Syllables
unpremediated, unsolicited, uncompensated, well-considered, unrecompensed, deliberate, noncompulsory, facultative
6 Syllables
unremunerated, nonobligatory