自願

自愿
zìyuàn
voluntary

CEDICT

Entry Composition

1 自 zì
  1. (bound form) self; oneself
  2. from; since
  3. naturally; as a matter of course
2 願 yuàn
  1. (bound form) wish; hope; desire
  2. to be willing
  3. to wish (that sth may happen); may ...
  4. vow; pledge