Synonyms and related words :
arbitrary, autonomous, autonomousness, autonomy, come forward, discretional, discretionary, do independently, do voluntarily, elective, free, free will, gratuitous, gratuitousness, independence, independent, need no prodding, nonmandatory, offered, optional, proffered, self-acting, self-action, self-active, self-activity, self-determination, self-determined, self-determining, spontaneity, spontaneous, spontaneousness, step forward, unasked, unbesought, unbidden, uncalled-for, uncoerced, uncompelled, unforced, unforcedness, uninfluenced, uninvited, unpressured, unprompted, unrequested, unrequired, unsolicited, unsought, voluntariness, voluntarism, voluntary, voluntaryism, volunteer militia, volunteer navy, volunteering, willful