voluntary

modif.

voluntary implies the exercise of one's own free choice or will in an action, whether or not external influences are at work voluntary services; intentional applies to that which is done on purpose for a definite reason and is in no way accidental an intentional slight; deliberate implies full realization of the significance of what one intends to do and of its effects a deliberate lie; willful implies obstinate and perverse determination to follow one's own will despite influences, arguments, advice, etc. in opposition a willful refusal