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matchmaker
go-between; intermediary; middleman; mediator; intercessor
二人の結婚は仲人の紹介がきっかけだったそうだ。
It seems their marriage started through a matchmaker's introduction.
昔は仲人を立てての結婚が一般的だったものだ。
In the old days, marriages through matchmakers were common.
彼女は友人の仲人として披露宴でスピーチをした。
She gave a speech at the reception as a matchmaker for her friend.