Mutual or reciprocal; involving two parties acting toward each other (often used as 'mutually').
相互の理解が信頼関係の基本だ。
Mutual understanding is the basis of a relationship of trust.
相互に連絡を取り合って調整した。
We coordinated by contacting each other mutually.
相互扶助の精神が大切だ。
The spirit of mutual assistance is important.