◎ 自愿 zìyuàn
[voluntary of one's own accord] 自己愿意而没有强迫地去做的
自愿的行动
自愿的捐助

志愿、自发、自觉

强制、强迫、被迫、劝诱

1.volunteer; of one's own free will; of one's own accord; voluntarily