n. 1. a. One who finds a person for another to marry.
b. One who finds a person for another to have a romantic relationship with, or who finds two people to have a romantic relationship with each other.
2. One who arranges athletic competitions, especially in professional boxing.
3. One who establishes or tries to establish a partnership between people, groups of people, or businesses: “The firm acts as a matchmaker for smaller businesses, especially in the countryside, where older presidents can't find someone to take over” (Yuko Takeo).