自じ己この意い思し

expression, noun

one's own volition; one's own will

A formal phrase emphasizing that an action is taken by one's own free will, not under compulsion. Often used in legal or official contexts.

• 彼かれは自じ己この意い思しでその契けい約やくを結むすんだ。

  He entered into the contract of his own volition.

• 自じ己この意い思しに基もとづいて行こう動どうすることが大たい切せつだ。

  It is important to act based on one's own will.