Mediation; acting as an intermediary or middleman who arranges or facilitates dealings between two parties.
両社の交渉は彼の仲立ちでまとまった。
The negotiations between the two companies were settled thanks to his mediation.
友人に仲立ちしてもらって、大家と入居者の間を調整した。
I had a friend act as a go-between to mediate between the landlord and the tenant.
不動産屋が売り主と買い主の仲立ちをした。
The real-estate agent acted as an intermediary between the seller and the buyer.