Synonyms to do voluntarily

volunteer, arbitrary, autonomous, autonomousness, autonomy, come forward, discretional, discretionary, do independently, 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